Merge pull request #26159 from GangaManoj/asset-credit-note

diff --git a/.github/helper/install.sh b/.github/helper/install.sh
index f7a7122..455ab86 100644
--- a/.github/helper/install.sh
+++ b/.github/helper/install.sh
@@ -42,6 +42,6 @@
 sed -i 's/redis_socketio:/# redis_socketio:/g' Procfile
 
 bench get-app erpnext "${GITHUB_WORKSPACE}"
-bench start &
+bench start &> bench_run_logs.txt &
 bench --site test_site reinstall --yes
 bench build --app frappe
diff --git a/.github/workflows/ui-tests.yml b/.github/workflows/ui-tests.yml
index 4bc55da..412a05b 100644
--- a/.github/workflows/ui-tests.yml
+++ b/.github/workflows/ui-tests.yml
@@ -102,3 +102,7 @@
         run: cd ~/frappe-bench/ && bench --site test_site run-ui-tests erpnext --headless
         env:
           CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+
+      - name: Show bench console if tests failed
+        if: ${{ failure() }}
+        run: cat ~/frappe-bench/bench_run_logs.txt
diff --git a/.gitignore b/.gitignore
index 63c51c4..89f5626 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,4 @@
 .idea/
 .vscode/
 node_modules/
+.backportrc.json
\ No newline at end of file
diff --git a/cypress/integration/test_item.js b/cypress/integration/test_item.js
new file mode 100644
index 0000000..fcb7533
--- /dev/null
+++ b/cypress/integration/test_item.js
@@ -0,0 +1,44 @@
+describe("Test Item Dashboard", () => {
+	before(() => {
+		cy.login();
+		cy.visit("/app/item");
+		cy.insert_doc(
+			"Item",
+			{
+				item_code: "e2e_test_item",
+				item_group: "All Item Groups",
+				opening_stock: 42,
+				valuation_rate: 100,
+			},
+			true
+		);
+		cy.go_to_doc("item", "e2e_test_item");
+	});
+
+	it("should show dashboard with correct data on first load", () => {
+		cy.get(".stock-levels").contains("Stock Levels").should("be.visible");
+		cy.get(".stock-levels").contains("e2e_test_item").should("exist");
+
+		// reserved and available qty
+		cy.get(".stock-levels .inline-graph-count")
+			.eq(0)
+			.contains("0")
+			.should("exist");
+		cy.get(".stock-levels .inline-graph-count")
+			.eq(1)
+			.contains("42")
+			.should("exist");
+	});
+
+	it("should persist on field change", () => {
+		cy.get('input[data-fieldname="disabled"]').check();
+		cy.wait(500);
+		cy.get(".stock-levels").contains("Stock Levels").should("be.visible");
+		cy.get(".stock-levels").should("have.length", 1);
+	});
+
+	it("should persist on reload", () => {
+		cy.reload();
+		cy.get(".stock-levels").contains("Stock Levels").should("be.visible");
+	});
+});
diff --git a/cypress/support/commands.js b/cypress/support/commands.js
index 7929a2e..7ddc80a 100644
--- a/cypress/support/commands.js
+++ b/cypress/support/commands.js
@@ -23,3 +23,9 @@
 //
 // -- This is will overwrite an existing command --
 // Cypress.Commands.overwrite("visit", (originalFn, url, options) => { ... });
+
+const slug = (name) => name.toLowerCase().replace(" ", "-");
+
+Cypress.Commands.add("go_to_doc", (doctype, name) => {
+	cy.visit(`/app/${slug(doctype)}/${encodeURIComponent(name)}`);
+});
diff --git a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py
index 3b764aa..cb1f2df 100644
--- a/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py
+++ b/erpnext/accounts/doctype/chart_of_accounts_importer/chart_of_accounts_importer.py
@@ -13,7 +13,9 @@
 from frappe.utils.xlsxutils import read_xlsx_file_from_attached_file, read_xls_file_from_attached_file
 
 class ChartofAccountsImporter(Document):
-	pass
+	def validate(self):
+		validate_accounts(self.import_file)
+
 
 @frappe.whitelist()
 def validate_company(company):
@@ -301,28 +303,28 @@
 		if account["parent_account"] and accounts_dict.get(account["parent_account"]):
 			accounts_dict[account["parent_account"]]["is_group"] = 1
 
-	message = validate_root(accounts_dict)
-	if message: return message
-	message = validate_account_types(accounts_dict)
-	if message: return message
+	validate_root(accounts_dict)
+	
+	validate_account_types(accounts_dict)
+	
 
 	return [True, len(accounts)]
 
 def validate_root(accounts):
 	roots = [accounts[d] for d in accounts if not accounts[d].get('parent_account')]
 	if len(roots) < 4:
-		return _("Number of root accounts cannot be less than 4")
+		frappe.throw(_("Number of root accounts cannot be less than 4"))
 
 	error_messages = []
 
 	for account in roots:
 		if not account.get("root_type") and account.get("account_name"):
-			error_messages.append("Please enter Root Type for account- {0}".format(account.get("account_name")))
+			error_messages.append(_("Please enter Root Type for account- {0}").format(account.get("account_name")))
 		elif account.get("root_type") not in get_root_types() and account.get("account_name"):
-			error_messages.append("Root Type for {0} must be one of the Asset, Liability, Income, Expense and Equity".format(account.get("account_name")))
+			error_messages.append(_("Root Type for {0} must be one of the Asset, Liability, Income, Expense and Equity").format(account.get("account_name")))
 
 	if error_messages:
-		return "<br>".join(error_messages)
+		frappe.throw("<br>".join(error_messages))
 
 def get_root_types():
 	return ('Asset', 'Liability', 'Expense', 'Income', 'Equity')
@@ -356,7 +358,7 @@
 
 	missing = list(set(account_types_for_ledger) - set(account_types))
 	if missing:
-		return _("Please identify/create Account (Ledger) for type - {0}").format(' , '.join(missing))
+		frappe.throw(_("Please identify/create Account (Ledger) for type - {0}").format(' , '.join(missing)))
 
 	account_types_for_group = ["Bank", "Cash", "Stock"]
 	# fix logic bug
@@ -364,7 +366,7 @@
 
 	missing = list(set(account_types_for_group) - set(account_groups))
 	if missing:
-		return _("Please identify/create Account (Group) for type - {0}").format(' , '.join(missing))
+		frappe.throw(_("Please identify/create Account (Group) for type - {0}").format(' , '.join(missing)))
 
 def unset_existing_data(company):
 	linked = frappe.db.sql('''select fieldname from tabDocField
diff --git a/erpnext/accounts/doctype/dunning/dunning.py b/erpnext/accounts/doctype/dunning/dunning.py
index c6c6892..1ef512a 100644
--- a/erpnext/accounts/doctype/dunning/dunning.py
+++ b/erpnext/accounts/doctype/dunning/dunning.py
@@ -25,7 +25,7 @@
 
 	def validate_amount(self):
 		amounts = calculate_interest_and_amount(
-			self.posting_date, self.outstanding_amount, self.rate_of_interest, self.dunning_fee, self.overdue_days)
+			self.outstanding_amount, self.rate_of_interest, self.dunning_fee, self.overdue_days)
 		if self.interest_amount != amounts.get('interest_amount'):
 			self.interest_amount = flt(amounts.get('interest_amount'), self.precision('interest_amount'))
 		if self.dunning_amount != amounts.get('dunning_amount'):
@@ -91,13 +91,13 @@
 			for dunning in dunnings:
 				frappe.db.set_value("Dunning", dunning.name, "status", 'Resolved')
 
-def calculate_interest_and_amount(posting_date, outstanding_amount, rate_of_interest, dunning_fee, overdue_days):
+def calculate_interest_and_amount(outstanding_amount, rate_of_interest, dunning_fee, overdue_days):
 	interest_amount = 0
-	grand_total = 0
+	grand_total = flt(outstanding_amount) + flt(dunning_fee)
 	if rate_of_interest:
 		interest_per_year = flt(outstanding_amount) * flt(rate_of_interest) / 100
 		interest_amount = (interest_per_year * cint(overdue_days)) / 365
-		grand_total = flt(outstanding_amount) + flt(interest_amount) + flt(dunning_fee)
+		grand_total += flt(interest_amount)
 	dunning_amount = flt(interest_amount) + flt(dunning_fee)
 	return {
 		'interest_amount': interest_amount,
diff --git a/erpnext/accounts/doctype/dunning/test_dunning.py b/erpnext/accounts/doctype/dunning/test_dunning.py
index e2d4d82..31cb078 100644
--- a/erpnext/accounts/doctype/dunning/test_dunning.py
+++ b/erpnext/accounts/doctype/dunning/test_dunning.py
@@ -16,6 +16,7 @@
 	@classmethod
 	def setUpClass(self):
 		create_dunning_type()
+		create_dunning_type_with_zero_interest_rate()
 		unlink_payment_on_cancel_of_invoice()
 
 	@classmethod
@@ -25,11 +26,19 @@
 	def test_dunning(self):
 		dunning = create_dunning()
 		amounts = calculate_interest_and_amount(
-			dunning.posting_date, dunning.outstanding_amount, dunning.rate_of_interest, dunning.dunning_fee, dunning.overdue_days)
+			dunning.outstanding_amount, dunning.rate_of_interest, dunning.dunning_fee, dunning.overdue_days)
 		self.assertEqual(round(amounts.get('interest_amount'), 2), 0.44)
 		self.assertEqual(round(amounts.get('dunning_amount'), 2), 20.44)
 		self.assertEqual(round(amounts.get('grand_total'), 2), 120.44)
 
+	def test_dunning_with_zero_interest_rate(self):
+		dunning = create_dunning_with_zero_interest_rate()
+		amounts = calculate_interest_and_amount(
+			dunning.outstanding_amount, dunning.rate_of_interest, dunning.dunning_fee, dunning.overdue_days)
+		self.assertEqual(round(amounts.get('interest_amount'), 2), 0)
+		self.assertEqual(round(amounts.get('dunning_amount'), 2), 20)
+		self.assertEqual(round(amounts.get('grand_total'), 2), 120)
+
 	def test_gl_entries(self):
 		dunning = create_dunning()
 		dunning.submit()
@@ -83,6 +92,27 @@
 	dunning.save()
 	return dunning
 
+def create_dunning_with_zero_interest_rate():
+	posting_date = add_days(today(), -20)
+	due_date = add_days(today(), -15)
+	sales_invoice = create_sales_invoice_against_cost_center(
+		posting_date=posting_date, due_date=due_date, status='Overdue')
+	dunning_type = frappe.get_doc("Dunning Type", 'First Notice with 0% Rate of Interest')
+	dunning = frappe.new_doc("Dunning")
+	dunning.sales_invoice = sales_invoice.name
+	dunning.customer_name = sales_invoice.customer_name
+	dunning.outstanding_amount = sales_invoice.outstanding_amount
+	dunning.debit_to = sales_invoice.debit_to
+	dunning.currency = sales_invoice.currency
+	dunning.company = sales_invoice.company
+	dunning.posting_date = nowdate()
+	dunning.due_date = sales_invoice.due_date
+	dunning.dunning_type = 'First Notice with 0% Rate of Interest'
+	dunning.rate_of_interest = dunning_type.rate_of_interest
+	dunning.dunning_fee = dunning_type.dunning_fee
+	dunning.save()
+	return dunning
+
 def create_dunning_type():
 	dunning_type = frappe.new_doc("Dunning Type")
 	dunning_type.dunning_type = 'First Notice'
@@ -98,3 +128,19 @@
 		}
 	)
 	dunning_type.save()
+
+def create_dunning_type_with_zero_interest_rate():
+	dunning_type = frappe.new_doc("Dunning Type")
+	dunning_type.dunning_type = 'First Notice with 0% Rate of Interest'
+	dunning_type.start_day = 10
+	dunning_type.end_day = 20
+	dunning_type.dunning_fee = 20
+	dunning_type.rate_of_interest = 0
+	dunning_type.append(
+		"dunning_letter_text", {
+			'language': 'en',
+			'body_text': 'We have still not received payment for our invoice ',
+			'closing_text': 'We kindly request that you pay the outstanding amount immediately, and late fees.'
+		}
+	)
+	dunning_type.save()
\ No newline at end of file
diff --git a/erpnext/accounts/doctype/payment_entry/payment_entry.py b/erpnext/accounts/doctype/payment_entry/payment_entry.py
index adaf99a..ff00fde 100644
--- a/erpnext/accounts/doctype/payment_entry/payment_entry.py
+++ b/erpnext/accounts/doctype/payment_entry/payment_entry.py
@@ -183,6 +183,13 @@
 					d.reference_name, self.party_account_currency)
 
 				for field, value in iteritems(ref_details):
+					if d.exchange_gain_loss:
+						# for cases where gain/loss is booked into invoice
+						# exchange_gain_loss is calculated from invoice & populated 
+						# and row.exchange_rate is already set to payment entry's exchange rate
+						# refer -> `update_reference_in_payment_entry()` in utils.py
+						continue
+
 					if field == 'exchange_rate' or not d.get(field) or force:
 						d.db_set(field, value)
 
@@ -664,8 +671,8 @@
 				gl_entries.append(gle)
 
 			if self.unallocated_amount:
-				base_unallocated_amount = self.unallocated_amount * \
-					(self.source_exchange_rate if self.payment_type=="Receive" else self.target_exchange_rate)
+				exchange_rate = self.get_exchange_rate()
+				base_unallocated_amount = (self.unallocated_amount * exchange_rate)
 
 				gle = party_gl_dict.copy()
 
@@ -806,10 +813,17 @@
 
 		if account_details:
 			row.update(account_details)
+		
+		if not row.get('amount'):
+			# if no difference amount
+			return
 
 		self.append('deductions', row)
 		self.set_unallocated_amount()
 
+	def get_exchange_rate(self):
+		return self.source_exchange_rate if self.payment_type=="Receive" else self.target_exchange_rate
+
 	def initialize_taxes(self):
 		for tax in self.get("taxes"):
 			validate_taxes_and_charges(tax)
@@ -1318,9 +1332,9 @@
 
 	return frappe._dict({
 		"due_date": ref_doc.get("due_date"),
-		"total_amount": total_amount,
-		"outstanding_amount": outstanding_amount,
-		"exchange_rate": exchange_rate,
+		"total_amount": flt(total_amount),
+		"outstanding_amount": flt(outstanding_amount),
+		"exchange_rate": flt(exchange_rate),
 		"bill_no": bill_no
 	})
 
diff --git a/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.json b/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.json
index 912ad09..43eb0b6 100644
--- a/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.json
+++ b/erpnext/accounts/doctype/payment_entry_reference/payment_entry_reference.json
@@ -14,7 +14,8 @@
   "total_amount",
   "outstanding_amount",
   "allocated_amount",
-  "exchange_rate"
+  "exchange_rate",
+  "exchange_gain_loss"
  ],
  "fields": [
   {
@@ -90,12 +91,19 @@
    "fieldtype": "Link",
    "label": "Payment Term",
    "options": "Payment Term"
+  },
+  {
+   "fieldname": "exchange_gain_loss",
+   "fieldtype": "Currency",
+   "label": "Exchange Gain/Loss",
+   "options": "Company:company:default_currency",
+   "read_only": 1
   }
  ],
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2021-02-10 11:25:47.144392",
+ "modified": "2021-04-21 13:30:11.605388",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Payment Entry Reference",
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index c1cc092..b99d75e 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -451,6 +451,7 @@
 			self.get_asset_gl_entry(gl_entries)
 
 		self.make_tax_gl_entries(gl_entries)
+		self.make_exchange_gain_loss_gl_entries(gl_entries)
 		self.make_internal_transfer_gl_entries(gl_entries)
 
 		self.allocate_advance_taxes(gl_entries)
diff --git a/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
index 189260a..a04d082 100644
--- a/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/test_purchase_invoice.py
@@ -974,6 +974,109 @@
 		acc_settings.submit_journal_entriessubmit_journal_entries = 0
 		acc_settings.save()
 
+	def test_gain_loss_with_advance_entry(self):
+		unlink_enabled = frappe.db.get_value("Accounts Settings", "Accounts Settings", "unlink_payment_on_cancel_of_invoice")
+		frappe.db.set_value("Accounts Settings", "Accounts Settings", "unlink_payment_on_cancel_of_invoice", 1)
+		pay = frappe.get_doc({
+			'doctype': 'Payment Entry',
+			'company': '_Test Company',
+			'payment_type': 'Pay',
+			'party_type': 'Supplier',
+			'party': '_Test Supplier USD',
+			'paid_to': '_Test Payable USD - _TC',
+			'paid_from': 'Cash - _TC',
+			'paid_amount': 70000,
+			'target_exchange_rate': 70,
+			'received_amount': 1000,
+		})
+		pay.insert()
+		pay.submit()
+
+		pi = make_purchase_invoice(supplier='_Test Supplier USD', currency="USD",
+			conversion_rate=75, rate=500, do_not_save=1, qty=1)
+		pi.cost_center = "_Test Cost Center - _TC"
+		pi.advances = []
+		pi.append("advances", {
+			"reference_type": "Payment Entry",
+			"reference_name": pay.name,
+			"advance_amount": 1000,
+			"remarks": pay.remarks,
+			"allocated_amount": 500,
+			"ref_exchange_rate": 70
+		})
+		pi.save()
+		pi.submit()
+
+		expected_gle = [
+			["_Test Account Cost for Goods Sold - _TC", 37500.0],
+			["_Test Payable USD - _TC", -40000.0],
+			["Exchange Gain/Loss - _TC", 2500.0]
+		]
+
+		gl_entries = frappe.db.sql("""
+			select account, sum(debit - credit) as balance from `tabGL Entry`
+			where voucher_no=%s
+			group by account order by account asc""", (pi.name), as_dict=1)
+		
+		for i, gle in enumerate(gl_entries):
+			self.assertEqual(expected_gle[i][0], gle.account)
+			self.assertEqual(expected_gle[i][1], gle.balance)
+
+		pi_2 = make_purchase_invoice(supplier='_Test Supplier USD', currency="USD",
+			conversion_rate=73, rate=500, do_not_save=1, qty=1)
+		pi_2.cost_center = "_Test Cost Center - _TC"
+		pi_2.advances = []
+		pi_2.append("advances", {
+			"reference_type": "Payment Entry",
+			"reference_name": pay.name,
+			"advance_amount": 500,
+			"remarks": pay.remarks,
+			"allocated_amount": 500,
+			"ref_exchange_rate": 70
+		})
+		pi_2.save()
+		pi_2.submit()
+
+		expected_gle = [
+			["_Test Account Cost for Goods Sold - _TC", 36500.0],
+			["_Test Payable USD - _TC", -38000.0],
+			["Exchange Gain/Loss - _TC", 1500.0]
+		]
+
+		gl_entries = frappe.db.sql("""
+			select account, sum(debit - credit) as balance from `tabGL Entry`
+			where voucher_no=%s
+			group by account order by account asc""", (pi_2.name), as_dict=1)
+
+		for i, gle in enumerate(gl_entries):
+			self.assertEqual(expected_gle[i][0], gle.account)
+			self.assertEqual(expected_gle[i][1], gle.balance)
+
+		expected_gle = [
+			["_Test Payable USD - _TC", 70000.0],
+			["Cash - _TC", -70000.0]
+		]
+
+		gl_entries = frappe.db.sql("""
+			select account, sum(debit - credit) as balance from `tabGL Entry`
+			where voucher_no=%s and is_cancelled=0
+			group by account order by account asc""", (pay.name), as_dict=1)
+
+		for i, gle in enumerate(gl_entries):
+			self.assertEqual(expected_gle[i][0], gle.account)
+			self.assertEqual(expected_gle[i][1], gle.balance)
+
+		pi.reload()
+		pi.cancel()
+
+		pi_2.reload()
+		pi_2.cancel()
+
+		pay.reload()
+		pay.cancel()
+
+		frappe.db.set_value("Accounts Settings", "Accounts Settings", "unlink_payment_on_cancel_of_invoice", unlink_enabled)
+
 	def test_purchase_invoice_advance_taxes(self):
 		from erpnext.buying.doctype.purchase_order.test_purchase_order import create_purchase_order
 		from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
diff --git a/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.json b/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.json
index 5801b17..63dfff8 100644
--- a/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.json
+++ b/erpnext/accounts/doctype/purchase_invoice_advance/purchase_invoice_advance.json
@@ -1,235 +1,127 @@
 {
- "allow_copy": 0, 
- "allow_import": 0, 
- "allow_rename": 0, 
- "beta": 0, 
- "creation": "2013-03-08 15:36:46", 
- "custom": 0, 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "Document", 
- "editable_grid": 1, 
+ "actions": [],
+ "creation": "2013-03-08 15:36:46",
+ "doctype": "DocType",
+ "document_type": "Document",
+ "editable_grid": 1,
+ "engine": "InnoDB",
+ "field_order": [
+  "reference_type",
+  "reference_name",
+  "remarks",
+  "reference_row",
+  "col_break1",
+  "advance_amount",
+  "allocated_amount",
+  "exchange_gain_loss",
+  "ref_exchange_rate"
+ ],
  "fields": [
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "reference_type", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "label": "Reference Type", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "journal_voucher", 
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-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "180px", 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "fieldname": "reference_type",
+   "fieldtype": "Link",
+   "label": "Reference Type",
+   "no_copy": 1,
+   "oldfieldname": "journal_voucher",
+   "oldfieldtype": "Link",
+   "options": "DocType",
+   "print_width": "180px",
+   "read_only": 1,
    "width": "180px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 3, 
-   "fieldname": "reference_name", 
-   "fieldtype": "Dynamic Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Reference Name", 
-   "length": 0, 
-   "no_copy": 1, 
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-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "columns": 3,
+   "fieldname": "reference_name",
+   "fieldtype": "Dynamic Link",
+   "in_list_view": 1,
+   "label": "Reference Name",
+   "no_copy": 1,
+   "options": "reference_type",
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 3, 
-   "fieldname": "remarks", 
-   "fieldtype": "Text", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Remarks", 
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-   "no_copy": 1, 
-   "oldfieldname": "remarks", 
-   "oldfieldtype": "Small Text", 
-   "permlevel": 0, 
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-   "print_hide_if_no_value": 0, 
-   "print_width": "150px", 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "columns": 3,
+   "fieldname": "remarks",
+   "fieldtype": "Text",
+   "in_list_view": 1,
+   "label": "Remarks",
+   "no_copy": 1,
+   "oldfieldname": "remarks",
+   "oldfieldtype": "Small Text",
+   "print_width": "150px",
+   "read_only": 1,
    "width": "150px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "reference_row", 
-   "fieldtype": "Data", 
-   "hidden": 1, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "label": "Reference Row", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "jv_detail_no", 
-   "oldfieldtype": "Date", 
-   "permlevel": 0, 
-   "print_hide": 1, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "80px", 
-   "read_only": 1, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "fieldname": "reference_row",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Reference Row",
+   "no_copy": 1,
+   "oldfieldname": "jv_detail_no",
+   "oldfieldtype": "Date",
+   "print_hide": 1,
+   "print_width": "80px",
+   "read_only": 1,
    "width": "80px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "col_break1", 
-   "fieldtype": "Column Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "col_break1",
+   "fieldtype": "Column Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 2, 
-   "fieldname": "advance_amount", 
-   "fieldtype": "Currency", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Advance Amount", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "advance_amount", 
-   "oldfieldtype": "Currency", 
-   "options": "party_account_currency", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "100px", 
-   "read_only": 1, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "columns": 2,
+   "fieldname": "advance_amount",
+   "fieldtype": "Currency",
+   "in_list_view": 1,
+   "label": "Advance Amount",
+   "no_copy": 1,
+   "oldfieldname": "advance_amount",
+   "oldfieldtype": "Currency",
+   "options": "party_account_currency",
+   "print_width": "100px",
+   "read_only": 1,
    "width": "100px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 2, 
-   "fieldname": "allocated_amount", 
-   "fieldtype": "Currency", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Allocated Amount", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "allocated_amount", 
-   "oldfieldtype": "Currency", 
-   "options": "party_account_currency", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "100px", 
-   "read_only": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "columns": 2,
+   "fieldname": "allocated_amount",
+   "fieldtype": "Currency",
+   "in_list_view": 1,
+   "label": "Allocated Amount",
+   "no_copy": 1,
+   "oldfieldname": "allocated_amount",
+   "oldfieldtype": "Currency",
+   "options": "party_account_currency",
+   "print_width": "100px",
    "width": "100px"
+  },
+  {
+   "fieldname": "exchange_gain_loss",
+   "fieldtype": "Currency",
+   "label": "Exchange Gain/Loss",
+   "options": "Company:company:default_currency",
+   "read_only": 1
+  },
+  {
+   "fieldname": "ref_exchange_rate",
+   "fieldtype": "Float",
+   "label": "Reference Exchange Rate",
+   "non_negative": 1,
+   "read_only": 1
   }
- ], 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "idx": 1, 
- "image_view": 0, 
- "in_create": 0, 
-
- "is_submittable": 0, 
- "issingle": 0, 
- "istable": 1, 
- "max_attachments": 0, 
- "menu_index": 0, 
- "modified": "2016-08-26 02:30:54.407138", 
- "modified_by": "Administrator", 
- "module": "Accounts", 
- "name": "Purchase Invoice Advance", 
- "owner": "Administrator", 
- "permissions": [], 
- "quick_entry": 1, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "sort_order": "DESC", 
- "track_seen": 0
+ ],
+ "idx": 1,
+ "index_web_pages_for_search": 1,
+ "istable": 1,
+ "links": [],
+ "modified": "2021-04-20 16:26:53.820530",
+ "modified_by": "Administrator",
+ "module": "Accounts",
+ "name": "Purchase Invoice Advance",
+ "owner": "Administrator",
+ "permissions": [],
+ "quick_entry": 1,
+ "sort_field": "modified",
+ "sort_order": "DESC"
 }
\ No newline at end of file
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 8ef5bcb..8889913 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -840,6 +840,7 @@
 		self.make_customer_gl_entry(gl_entries)
 
 		self.make_tax_gl_entries(gl_entries)
+		self.make_exchange_gain_loss_gl_entries(gl_entries)
 		self.make_internal_transfer_gl_entries(gl_entries)
 
 		self.allocate_advance_taxes(gl_entries)
diff --git a/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.json b/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.json
index 14bf4d8..29422d6 100644
--- a/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.json
+++ b/erpnext/accounts/doctype/sales_invoice_advance/sales_invoice_advance.json
@@ -1,235 +1,128 @@
 {
- "allow_copy": 0, 
- "allow_import": 0, 
- "allow_rename": 0, 
- "beta": 0, 
- "creation": "2013-02-22 01:27:41", 
- "custom": 0, 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "Document", 
- "editable_grid": 1, 
+ "actions": [],
+ "creation": "2013-02-22 01:27:41",
+ "doctype": "DocType",
+ "document_type": "Document",
+ "editable_grid": 1,
+ "engine": "InnoDB",
+ "field_order": [
+  "reference_type",
+  "reference_name",
+  "remarks",
+  "reference_row",
+  "col_break1",
+  "advance_amount",
+  "allocated_amount",
+  "exchange_gain_loss",
+  "ref_exchange_rate"
+ ],
  "fields": [
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "reference_type", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "label": "Reference Type", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "journal_voucher", 
-   "oldfieldtype": "Link", 
-   "options": "DocType", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "250px", 
-   "read_only": 1, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "fieldname": "reference_type",
+   "fieldtype": "Link",
+   "label": "Reference Type",
+   "no_copy": 1,
+   "oldfieldname": "journal_voucher",
+   "oldfieldtype": "Link",
+   "options": "DocType",
+   "print_width": "250px",
+   "read_only": 1,
    "width": "250px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 3, 
-   "fieldname": "reference_name", 
-   "fieldtype": "Dynamic Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Reference Name", 
-   "length": 0, 
-   "no_copy": 1, 
-   "options": "reference_type", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 1, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "columns": 3,
+   "fieldname": "reference_name",
+   "fieldtype": "Dynamic Link",
+   "in_list_view": 1,
+   "label": "Reference Name",
+   "no_copy": 1,
+   "options": "reference_type",
+   "print_hide": 1,
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 3, 
-   "fieldname": "remarks", 
-   "fieldtype": "Text", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Remarks", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "remarks", 
-   "oldfieldtype": "Small Text", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "150px", 
-   "read_only": 1, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "columns": 3,
+   "fieldname": "remarks",
+   "fieldtype": "Text",
+   "in_list_view": 1,
+   "label": "Remarks",
+   "no_copy": 1,
+   "oldfieldname": "remarks",
+   "oldfieldtype": "Small Text",
+   "print_width": "150px",
+   "read_only": 1,
    "width": "150px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "reference_row", 
-   "fieldtype": "Data", 
-   "hidden": 1, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "label": "Reference Row", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "jv_detail_no", 
-   "oldfieldtype": "Data", 
-   "permlevel": 0, 
-   "print_hide": 1, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "120px", 
-   "read_only": 1, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "fieldname": "reference_row",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Reference Row",
+   "no_copy": 1,
+   "oldfieldname": "jv_detail_no",
+   "oldfieldtype": "Data",
+   "print_hide": 1,
+   "print_width": "120px",
+   "read_only": 1,
    "width": "120px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "col_break1", 
-   "fieldtype": "Column Break", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "col_break1",
+   "fieldtype": "Column Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 2, 
-   "fieldname": "advance_amount", 
-   "fieldtype": "Currency", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Advance amount", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "advance_amount", 
-   "oldfieldtype": "Currency", 
-   "options": "party_account_currency", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "120px", 
-   "read_only": 1, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "columns": 2,
+   "fieldname": "advance_amount",
+   "fieldtype": "Currency",
+   "in_list_view": 1,
+   "label": "Advance amount",
+   "no_copy": 1,
+   "oldfieldname": "advance_amount",
+   "oldfieldtype": "Currency",
+   "options": "party_account_currency",
+   "print_width": "120px",
+   "read_only": 1,
    "width": "120px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 2, 
-   "fieldname": "allocated_amount", 
-   "fieldtype": "Currency", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 1, 
-   "label": "Allocated amount", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "allocated_amount", 
-   "oldfieldtype": "Currency", 
-   "options": "party_account_currency", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "print_width": "120px", 
-   "read_only": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "columns": 2,
+   "fieldname": "allocated_amount",
+   "fieldtype": "Currency",
+   "in_list_view": 1,
+   "label": "Allocated amount",
+   "no_copy": 1,
+   "oldfieldname": "allocated_amount",
+   "oldfieldtype": "Currency",
+   "options": "party_account_currency",
+   "print_width": "120px",
    "width": "120px"
+  },
+  {
+   "fieldname": "exchange_gain_loss",
+   "fieldtype": "Currency",
+   "label": "Exchange Gain/Loss",
+   "options": "Company:company:default_currency",
+   "read_only": 1
+  },
+  {
+   "fieldname": "ref_exchange_rate",
+   "fieldtype": "Float",
+   "label": "Reference Exchange Rate",
+   "non_negative": 1,
+   "read_only": 1
   }
- ], 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "idx": 1, 
- "image_view": 0, 
- "in_create": 0, 
-
- "is_submittable": 0, 
- "issingle": 0, 
- "istable": 1, 
- "max_attachments": 0, 
- "menu_index": 0, 
- "modified": "2016-08-26 02:36:10.718057", 
- "modified_by": "Administrator", 
- "module": "Accounts", 
- "name": "Sales Invoice Advance", 
- "owner": "Administrator", 
- "permissions": [], 
- "quick_entry": 1, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "sort_order": "DESC", 
- "track_seen": 0
+ ],
+ "idx": 1,
+ "index_web_pages_for_search": 1,
+ "istable": 1,
+ "links": [],
+ "modified": "2021-06-04 20:25:49.832052",
+ "modified_by": "Administrator",
+ "module": "Accounts",
+ "name": "Sales Invoice Advance",
+ "owner": "Administrator",
+ "permissions": [],
+ "quick_entry": 1,
+ "sort_field": "modified",
+ "sort_order": "DESC"
 }
\ No newline at end of file
diff --git a/erpnext/accounts/report/general_ledger/general_ledger.py b/erpnext/accounts/report/general_ledger/general_ledger.py
index 744ada9..e724e9b 100644
--- a/erpnext/accounts/report/general_ledger/general_ledger.py
+++ b/erpnext/accounts/report/general_ledger/general_ledger.py
@@ -48,13 +48,12 @@
 
 	if not filters.get("from_date") and not filters.get("to_date"):
 		frappe.throw(_("{0} and {1} are mandatory").format(frappe.bold(_("From Date")), frappe.bold(_("To Date"))))
-
-	for account in filters.account:
-		if not account_details.get(account):
-			frappe.throw(_("Account {0} does not exists").format(account))
 			
 	if filters.get('account'):
 		filters.account = frappe.parse_json(filters.get('account'))
+		for account in filters.account:
+			if not account_details.get(account):
+				frappe.throw(_("Account {0} does not exists").format(account))
 
 	if (filters.get("account") and filters.get("group_by") == _('Group by Account')
 		and account_details[filters.account].is_group == 0):
diff --git a/erpnext/accounts/utils.py b/erpnext/accounts/utils.py
index 66a9b60..a8e4b15 100644
--- a/erpnext/accounts/utils.py
+++ b/erpnext/accounts/utils.py
@@ -472,7 +472,8 @@
 		"total_amount": d.grand_total,
 		"outstanding_amount": d.outstanding_amount,
 		"allocated_amount": d.allocated_amount,
-		"exchange_rate": d.exchange_rate
+		"exchange_rate": d.exchange_rate if not d.exchange_gain_loss else payment_entry.get_exchange_rate(),
+		"exchange_gain_loss": d.exchange_gain_loss # only populated from invoice in case of advance allocation
 	}
 
 	if d.voucher_detail_no:
@@ -498,12 +499,15 @@
 	payment_entry.set_amounts()
 
 	if d.difference_amount and d.difference_account:
-		payment_entry.set_gain_or_loss(account_details={
+		account_details = {
 			'account': d.difference_account,
 			'cost_center': payment_entry.cost_center or frappe.get_cached_value('Company',
-				payment_entry.company, "cost_center"),
-			'amount': d.difference_amount
-		})
+				payment_entry.company, "cost_center")
+		}
+		if d.difference_amount:
+			account_details['amount'] = d.difference_amount
+
+		payment_entry.set_gain_or_loss(account_details=account_details)
 
 	if not do_not_save:
 		payment_entry.save(ignore_permissions=True)
diff --git a/erpnext/buying/doctype/supplier/supplier.js b/erpnext/buying/doctype/supplier/supplier.js
index 4ddc458..1766c2c 100644
--- a/erpnext/buying/doctype/supplier/supplier.js
+++ b/erpnext/buying/doctype/supplier/supplier.js
@@ -60,10 +60,23 @@
 				erpnext.utils.make_pricing_rule(frm.doc.doctype, frm.doc.name);
 			}, __('Create'));
 
+			frm.add_custom_button(__('Get Supplier Group Details'), function () {
+				frm.trigger("get_supplier_group_details");
+			}, __('Actions'));
+
 			// indicators
 			erpnext.utils.set_party_dashboard_indicators(frm);
 		}
 	},
+	get_supplier_group_details: function(frm) {
+		frappe.call({
+			method: "get_supplier_group_details",
+			doc: frm.doc,
+			callback: function() {
+				frm.refresh();
+			}
+		});
+	},
 
 	is_internal_supplier: function(frm) {
 		if (frm.doc.is_internal_supplier == 1) {
diff --git a/erpnext/buying/doctype/supplier/supplier.py b/erpnext/buying/doctype/supplier/supplier.py
index edeb135..fd16b23 100644
--- a/erpnext/buying/doctype/supplier/supplier.py
+++ b/erpnext/buying/doctype/supplier/supplier.py
@@ -51,6 +51,23 @@
 		validate_party_accounts(self)
 		self.validate_internal_supplier()
 
+	@frappe.whitelist()
+	def get_supplier_group_details(self):
+		doc = frappe.get_doc('Supplier Group', self.supplier_group)
+		self.payment_terms = ""
+		self.accounts = []
+
+		if doc.accounts:
+			for account in doc.accounts:
+				child = self.append('accounts')
+				child.company = account.company
+				child.account = account.account
+
+		if doc.payment_terms:
+			self.payment_terms = doc.payment_terms
+
+		self.save()
+
 	def validate_internal_supplier(self):
 		internal_supplier = frappe.db.get_value("Supplier",
 			{"is_internal_supplier": 1, "represents_company": self.represents_company, "name": ("!=", self.name)}, "name")
@@ -86,4 +103,4 @@
 						create_contact(supplier, 'Supplier',
 							doc.name, args.get('supplier_email_' + str(i)))
 				except frappe.NameError:
-					pass
\ No newline at end of file
+					pass
diff --git a/erpnext/buying/doctype/supplier/test_supplier.py b/erpnext/buying/doctype/supplier/test_supplier.py
index f9c8d35..8980466 100644
--- a/erpnext/buying/doctype/supplier/test_supplier.py
+++ b/erpnext/buying/doctype/supplier/test_supplier.py
@@ -13,6 +13,30 @@
 
 
 class TestSupplier(unittest.TestCase):
+    def test_get_supplier_group_details(self):
+        doc = frappe.new_doc("Supplier Group")
+        doc.supplier_group_name = "_Testing Supplier Group"
+        doc.payment_terms = "_Test Payment Term Template 3"
+        doc.accounts = []
+        test_account_details = {
+            "company": "_Test Company",
+            "account": "Creditors - _TC",
+        }
+        doc.append("accounts", test_account_details)
+        doc.save()
+        s_doc = frappe.new_doc("Supplier")
+        s_doc.supplier_name = "Testing Supplier"
+        s_doc.supplier_group = "_Testing Supplier Group"
+        s_doc.payment_terms = ""
+        s_doc.accounts = []
+        s_doc.insert()
+        s_doc.get_supplier_group_details()
+        self.assertEqual(s_doc.payment_terms, "_Test Payment Term Template 3")
+        self.assertEqual(s_doc.accounts[0].company, "_Test Company")
+        self.assertEqual(s_doc.accounts[0].account, "Creditors - _TC")
+        s_doc.delete()
+        doc.delete()
+
     def test_supplier_default_payment_terms(self):
         # Payment Term based on Days after invoice date
         frappe.db.set_value(
@@ -136,4 +160,4 @@
         return doc
 
     except frappe.DuplicateEntryError:
-        return frappe.get_doc("Supplier", args.supplier_name)
\ No newline at end of file
+        return frappe.get_doc("Supplier", args.supplier_name)
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index 1c086e9..a9860ed 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -124,6 +124,8 @@
 			if cint(self.allocate_advances_automatically) and not cint(self.get(pos_check_field)):
 				self.set_advances()
 
+			self.set_advance_gain_or_loss()
+
 			if self.is_return:
 				self.validate_qty()
 			else:
@@ -584,15 +586,18 @@
 				allocated_amount = min(amount - advance_allocated, d.amount)
 			advance_allocated += flt(allocated_amount)
 
-			self.append("advances", {
+			advance_row = {
 				"doctype": self.doctype + " Advance",
 				"reference_type": d.reference_type,
 				"reference_name": d.reference_name,
 				"reference_row": d.reference_row,
 				"remarks": d.remarks,
 				"advance_amount": flt(d.amount),
-				"allocated_amount": allocated_amount
-			})
+				"allocated_amount": allocated_amount,
+				"ref_exchange_rate": flt(d.exchange_rate) # exchange_rate of advance entry
+			}
+
+			self.append("advances", advance_row)
 
 	def get_advance_entries(self, include_unallocated=True):
 		if self.doctype == "Sales Invoice":
@@ -650,6 +655,66 @@
 						"Payment Entry {0} is linked against Order {1}, check if it should be pulled as advance in this invoice.")
 							.format(d.reference_name, d.against_order))
 
+	def set_advance_gain_or_loss(self):
+		if not self.get("advances"):
+			return
+
+		for d in self.get("advances"):
+			advance_exchange_rate = d.ref_exchange_rate
+			if (d.allocated_amount and self.conversion_rate != 1
+				and self.conversion_rate != advance_exchange_rate):
+
+				base_allocated_amount_in_ref_rate = advance_exchange_rate * d.allocated_amount
+				base_allocated_amount_in_inv_rate = self.conversion_rate * d.allocated_amount
+				difference = base_allocated_amount_in_ref_rate - base_allocated_amount_in_inv_rate
+
+				d.exchange_gain_loss = difference
+
+	def make_exchange_gain_loss_gl_entries(self, gl_entries):
+		if self.get('doctype') in ['Purchase Invoice', 'Sales Invoice']:
+			for d in self.get("advances"):
+				if d.exchange_gain_loss:
+					party = self.supplier if self.get('doctype') == 'Purchase Invoice' else self.customer
+					party_account = self.credit_to if self.get('doctype') == 'Purchase Invoice' else self.debit_to
+					party_type = "Supplier" if self.get('doctype') == 'Purchase Invoice' else "Customer"
+
+					gain_loss_account = frappe.db.get_value('Company', self.company, 'exchange_gain_loss_account')
+					account_currency = get_account_currency(gain_loss_account)
+					if account_currency != self.company_currency:
+						frappe.throw(_("Currency for {0} must be {1}").format(d.account, self.company_currency))
+
+					# for purchase
+					dr_or_cr = 'debit' if d.exchange_gain_loss > 0 else 'credit'
+					# just reverse for sales?
+					dr_or_cr = 'debit' if dr_or_cr == 'credit' else 'credit'
+
+					gl_entries.append(
+						self.get_gl_dict({
+							"account": gain_loss_account,
+							"account_currency": account_currency,
+							"against": party,
+							dr_or_cr + "_in_account_currency": abs(d.exchange_gain_loss),
+							dr_or_cr: abs(d.exchange_gain_loss),
+							"cost_center": self.cost_center,
+							"project": self.project
+						}, item=d)
+					)
+
+					dr_or_cr = 'debit' if dr_or_cr == 'credit' else 'credit'
+
+					gl_entries.append(
+						self.get_gl_dict({
+							"account": party_account,
+							"party_type": party_type,
+							"party": party,
+							"against": gain_loss_account,
+							dr_or_cr + "_in_account_currency": flt(abs(d.exchange_gain_loss) / self.conversion_rate),
+							dr_or_cr: abs(d.exchange_gain_loss),
+							"cost_center": self.cost_center,
+							"project": self.project
+						}, self.party_account_currency, item=self)
+					)
+
 	def update_against_document_in_jv(self):
 		"""
 			Links invoice and advance voucher:
@@ -690,7 +755,9 @@
 						if self.party_account_currency != self.company_currency else 1),
 					'grand_total': (self.base_grand_total
 						if self.party_account_currency == self.company_currency else self.grand_total),
-					'outstanding_amount': self.outstanding_amount
+					'outstanding_amount': self.outstanding_amount,
+					'difference_account': frappe.db.get_value('Company', self.company, 'exchange_gain_loss_account'),
+					'exchange_gain_loss': flt(d.get('exchange_gain_loss'))
 				})
 				lst.append(args)
 
@@ -1289,6 +1356,8 @@
 	party_account_field = "paid_from" if party_type == "Customer" else "paid_to"
 	currency_field = "paid_from_account_currency" if party_type == "Customer" else "paid_to_account_currency"
 	payment_type = "Receive" if party_type == "Customer" else "Pay"
+	exchange_rate_field = "source_exchange_rate" if payment_type == "Receive" else "target_exchange_rate"
+
 	payment_entries_against_order, unallocated_payment_entries = [], []
 	limit_cond = "limit %s" % limit if limit else ""
 
@@ -1305,27 +1374,28 @@
 				"Payment Entry" as reference_type, t1.name as reference_name,
 				t1.remarks, t2.allocated_amount as amount, t2.name as reference_row,
 				t2.reference_name as against_order, t1.posting_date,
-				t1.{0} as currency
+				t1.{0} as currency, t1.{4} as exchange_rate
 			from `tabPayment Entry` t1, `tabPayment Entry Reference` t2
 			where
 				t1.name = t2.parent and t1.{1} = %s and t1.payment_type = %s
 				and t1.party_type = %s and t1.party = %s and t1.docstatus = 1
 				and t2.reference_doctype = %s {2}
 			order by t1.posting_date {3}
-		""".format(currency_field, party_account_field, reference_condition, limit_cond),
+		""".format(currency_field, party_account_field, reference_condition, limit_cond, exchange_rate_field),
 													  [party_account, payment_type, party_type, party,
 													   order_doctype] + order_list, as_dict=1)
 
 	if include_unallocated:
 		unallocated_payment_entries = frappe.db.sql("""
 				select "Payment Entry" as reference_type, name as reference_name,
-				remarks, unallocated_amount as amount
+				remarks, unallocated_amount as amount, {2} as exchange_rate
 				from `tabPayment Entry`
 				where
 					{0} = %s and party_type = %s and party = %s and payment_type = %s
 					and docstatus = 1 and unallocated_amount > 0
 				order by posting_date {1}
-			""".format(party_account_field, limit_cond), (party_account, party_type, party, payment_type), as_dict=1)
+			""".format(party_account_field, limit_cond, exchange_rate_field),
+			(party_account, party_type, party, payment_type), as_dict=1)
 
 	return list(payment_entries_against_order) + list(unallocated_payment_entries)
 
diff --git a/erpnext/controllers/stock_controller.py b/erpnext/controllers/stock_controller.py
index 8196cff..2526e6d 100644
--- a/erpnext/controllers/stock_controller.py
+++ b/erpnext/controllers/stock_controller.py
@@ -356,42 +356,68 @@
 		}, update_modified)
 
 	def validate_inspection(self):
-		'''Checks if quality inspection is set for Items that require inspection.
-		On submit, throw an exception'''
-		inspection_required_fieldname = None
-		if self.doctype in ["Purchase Receipt", "Purchase Invoice"]:
-			inspection_required_fieldname = "inspection_required_before_purchase"
-		elif self.doctype in ["Delivery Note", "Sales Invoice"]:
-			inspection_required_fieldname = "inspection_required_before_delivery"
+		"""Checks if quality inspection is set/ is valid for Items that require inspection."""
+		inspection_fieldname_map = {
+			"Purchase Receipt": "inspection_required_before_purchase",
+			"Purchase Invoice": "inspection_required_before_purchase",
+			"Sales Invoice": "inspection_required_before_delivery",
+			"Delivery Note": "inspection_required_before_delivery"
+		}
+		inspection_required_fieldname = inspection_fieldname_map.get(self.doctype)
 
+		# return if inspection is not required on document level
 		if ((not inspection_required_fieldname and self.doctype != "Stock Entry") or
 			(self.doctype == "Stock Entry" and not self.inspection_required) or
 			(self.doctype in ["Sales Invoice", "Purchase Invoice"] and not self.update_stock)):
 				return
 
-		for d in self.get('items'):
-			qa_required = False
-			if (inspection_required_fieldname and not d.quality_inspection and
-				frappe.db.get_value("Item", d.item_code, inspection_required_fieldname)):
-				qa_required = True
-			elif self.doctype == "Stock Entry" and not d.quality_inspection and d.t_warehouse:
-				qa_required = True
-			if self.docstatus == 1 and d.quality_inspection:
-				qa_doc = frappe.get_doc("Quality Inspection", d.quality_inspection)
-				if qa_doc.docstatus == 0:
-					link = frappe.utils.get_link_to_form('Quality Inspection', d.quality_inspection)
-					frappe.throw(_("Quality Inspection: {0} is not submitted for the item: {1} in row {2}").format(link, d.item_code, d.idx), QualityInspectionNotSubmittedError)
+		for row in self.get('items'):
+			qi_required = False
+			if (inspection_required_fieldname and frappe.db.get_value("Item", row.item_code, inspection_required_fieldname)):
+				qi_required = True
+			elif self.doctype == "Stock Entry" and row.t_warehouse:
+				qi_required = True # inward stock needs inspection
 
-				if qa_doc.status != 'Accepted':
-					frappe.throw(_("Row {0}: Quality Inspection rejected for item {1}")
-						.format(d.idx, d.item_code), QualityInspectionRejectedError)
-			elif qa_required :
-				action = frappe.get_doc('Stock Settings').action_if_quality_inspection_is_not_submitted
-				if self.docstatus==1 and action == 'Stop':
-					frappe.throw(_("Quality Inspection required for Item {0} to submit").format(frappe.bold(d.item_code)),
-						exc=QualityInspectionRequiredError)
-				else:
-					frappe.msgprint(_("Create Quality Inspection for Item {0}").format(frappe.bold(d.item_code)))
+			if qi_required: # validate row only if inspection is required on item level
+				self.validate_qi_presence(row)
+				if self.docstatus == 1:
+					self.validate_qi_submission(row)
+					self.validate_qi_rejection(row)
+
+	def validate_qi_presence(self, row):
+		"""Check if QI is present on row level. Warn on save and stop on submit if missing."""
+		if not row.quality_inspection:
+			msg = f"Row #{row.idx}: Quality Inspection is required for Item {frappe.bold(row.item_code)}"
+			if self.docstatus == 1:
+				frappe.throw(_(msg), title=_("Inspection Required"), exc=QualityInspectionRequiredError)
+			else:
+				frappe.msgprint(_(msg), title=_("Inspection Required"), indicator="blue")
+
+	def validate_qi_submission(self, row):
+		"""Check if QI is submitted on row level, during submission"""
+		action = frappe.db.get_single_value("Stock Settings", "action_if_quality_inspection_is_not_submitted")
+		qa_docstatus = frappe.db.get_value("Quality Inspection", row.quality_inspection, "docstatus")
+
+		if not qa_docstatus == 1:
+			link = frappe.utils.get_link_to_form('Quality Inspection', row.quality_inspection)
+			msg = f"Row #{row.idx}: Quality Inspection {link} is not submitted for the item: {row.item_code}"
+			if action == "Stop":
+				frappe.throw(_(msg), title=_("Inspection Submission"), exc=QualityInspectionNotSubmittedError)
+			else:
+				frappe.msgprint(_(msg), alert=True, indicator="orange")
+
+	def validate_qi_rejection(self, row):
+		"""Check if QI is rejected on row level, during submission"""
+		action = frappe.db.get_single_value("Stock Settings", "action_if_quality_inspection_is_rejected")
+		qa_status = frappe.db.get_value("Quality Inspection", row.quality_inspection, "status")
+
+		if qa_status == "Rejected":
+			link = frappe.utils.get_link_to_form('Quality Inspection', row.quality_inspection)
+			msg = f"Row #{row.idx}: Quality Inspection {link} was rejected for item {row.item_code}"
+			if action == "Stop":
+				frappe.throw(_(msg), title=_("Inspection Rejected"), exc=QualityInspectionRejectedError)
+			else:
+				frappe.msgprint(_(msg), alert=True, indicator="orange")
 
 	def update_blanket_order(self):
 		blanket_orders = list(set([d.blanket_order for d in self.items if d.blanket_order]))
diff --git a/erpnext/hooks.py b/erpnext/hooks.py
index ba10b58..9717bb9 100644
--- a/erpnext/hooks.py
+++ b/erpnext/hooks.py
@@ -245,7 +245,10 @@
 			"erpnext.portal.utils.set_default_role"]
 	},
 	"Communication": {
-		"on_update": "erpnext.support.doctype.service_level_agreement.service_level_agreement.update_hold_time"
+		"on_update": [
+			"erpnext.support.doctype.service_level_agreement.service_level_agreement.update_hold_time",
+			"erpnext.support.doctype.issue.issue.set_first_response_time"
+		]
 	},
 	("Sales Taxes and Charges Template", 'Price List'): {
 		"on_update": "erpnext.shopping_cart.doctype.shopping_cart_settings.shopping_cart_settings.validate_cart_settings"
diff --git a/erpnext/hr/doctype/training_event/training_event.js b/erpnext/hr/doctype/training_event/training_event.js
index 064dfb2..d5f6e5f 100644
--- a/erpnext/hr/doctype/training_event/training_event.js
+++ b/erpnext/hr/doctype/training_event/training_event.js
@@ -33,7 +33,8 @@
 		frm.set_query("employee", "employees", function () {
 			return {
 				filters: {
-					name: ["NOT IN", emp]
+					name: ["NOT IN", emp],
+					status: "Active"
 				}
 			};
 		});
diff --git a/erpnext/loan_management/doctype/loan/loan.js b/erpnext/loan_management/doctype/loan/loan.js
index 28af3a9..f9c201a 100644
--- a/erpnext/loan_management/doctype/loan/loan.js
+++ b/erpnext/loan_management/doctype/loan/loan.js
@@ -28,7 +28,8 @@
 		frm.set_query("loan_type", function () {
 			return {
 				"filters": {
-					"docstatus": 1
+					"docstatus": 1,
+					"company": frm.doc.company
 				}
 			};
 		});
diff --git a/erpnext/loan_management/doctype/loan_application/loan_application.js b/erpnext/loan_management/doctype/loan_application/loan_application.js
index 1365274..017026c 100644
--- a/erpnext/loan_management/doctype/loan_application/loan_application.js
+++ b/erpnext/loan_management/doctype/loan_application/loan_application.js
@@ -14,11 +14,18 @@
 	refresh: function(frm) {
 		frm.trigger("toggle_fields");
 		frm.trigger("add_toolbar_buttons");
+		frm.set_query("loan_type", () => {
+			return {
+				filters: {
+					company: frm.doc.company
+				}
+			};
+		});
 	},
 	repayment_method: function(frm) {
-		frm.doc.repayment_amount = frm.doc.repayment_periods = ""
-		frm.trigger("toggle_fields")
-		frm.trigger("toggle_required")
+		frm.doc.repayment_amount = frm.doc.repayment_periods = "";
+		frm.trigger("toggle_fields");
+		frm.trigger("toggle_required");
 	},
 	toggle_fields: function(frm) {
 		frm.toggle_enable("repayment_amount", frm.doc.repayment_method=="Repay Fixed Amount per Period")
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 986b0c5..c93f7a7 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -290,5 +290,6 @@
 erpnext.patches.v13_0.set_training_event_attendance
 erpnext.patches.v13_0.bill_for_rejected_quantity_in_purchase_invoice
 erpnext.patches.v13_0.rename_issue_status_hold_to_on_hold
+erpnext.patches.v13_0.update_response_by_variance
 erpnext.patches.v13_0.bill_for_rejected_quantity_in_purchase_invoice
 erpnext.patches.v13_0.update_job_card_details
diff --git a/erpnext/patches/v13_0/update_response_by_variance.py b/erpnext/patches/v13_0/update_response_by_variance.py
new file mode 100644
index 0000000..ef4d976
--- /dev/null
+++ b/erpnext/patches/v13_0/update_response_by_variance.py
@@ -0,0 +1,31 @@
+# Copyright (c) 2020, Frappe and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+def execute():
+	if frappe.db.exists('DocType', 'Issue') and frappe.db.count('Issue'):
+		invalid_issues = frappe.get_all('Issue', {
+			'first_responded_on': ['is', 'set'],
+			'response_by_variance': ['<', 0]
+		}, ["name", "response_by_variance", "timestampdiff(Second, `first_responded_on`, `response_by`) as variance"])
+
+		# issues which has response_by_variance set as -ve
+		# but diff between first_responded_on & response_by is +ve i.e SLA isn't failed
+		invalid_issues = [d for d in invalid_issues if d.get('variance') > 0]
+
+		for issue in invalid_issues:
+			frappe.db.set_value('Issue', issue.get('name'), 'response_by_variance', issue.get('variance'), update_modified=False)
+
+		invalid_issues = frappe.get_all('Issue', {
+			'resolution_date': ['is', 'set'],
+			'resolution_by_variance': ['<', 0]
+		}, ["name", "resolution_by_variance", "timestampdiff(Second, `resolution_date`, `resolution_by`) as variance"])
+
+		# issues which has resolution_by_variance set as -ve
+		# but diff between resolution_date & resolution_by is +ve i.e SLA isn't failed
+		invalid_issues = [d for d in invalid_issues if d.get('variance') > 0]
+
+		for issue in invalid_issues:
+			frappe.db.set_value('Issue', issue.get('name'), 'resolution_by_variance', issue.get('variance'), update_modified=False)
diff --git a/erpnext/payroll/doctype/salary_slip/salary_slip.py b/erpnext/payroll/doctype/salary_slip/salary_slip.py
index c55bec8..f82b0d5 100644
--- a/erpnext/payroll/doctype/salary_slip/salary_slip.py
+++ b/erpnext/payroll/doctype/salary_slip/salary_slip.py
@@ -1088,6 +1088,7 @@
 				"applicant": self.employee,
 				"docstatus": 1,
 				"repay_from_salary": 1,
+				"company": self.company
 			})
 
 	def make_loan_repayment_entry(self):
diff --git a/erpnext/payroll/doctype/salary_slip/test_salary_slip.py b/erpnext/payroll/doctype/salary_slip/test_salary_slip.py
index ce88cc3..d730fcf 100644
--- a/erpnext/payroll/doctype/salary_slip/test_salary_slip.py
+++ b/erpnext/payroll/doctype/salary_slip/test_salary_slip.py
@@ -481,15 +481,19 @@
 	if not salary_structure:
 		salary_structure = payroll_frequency + " Salary Structure Test for Salary Slip"
 
+	employee = frappe.db.get_value("Employee",
+					{
+						"user_id": user
+					},
+					["name", "company", "employee_name"],
+					as_dict=True)
 
-	employee = frappe.db.get_value("Employee", {"user_id": user})
-	salary_structure_doc = make_salary_structure(salary_structure, payroll_frequency, employee=employee)
+	salary_structure_doc = make_salary_structure(salary_structure, payroll_frequency, employee=employee.name, company=employee.company)
 	salary_slip_name = frappe.db.get_value("Salary Slip", {"employee": frappe.db.get_value("Employee", {"user_id": user})})
 
 	if not salary_slip_name:
-		salary_slip = make_salary_slip(salary_structure_doc.name, employee = employee)
-		salary_slip.employee_name = frappe.get_value("Employee",
-			{"name":frappe.db.get_value("Employee", {"user_id": user})}, "employee_name")
+		salary_slip = make_salary_slip(salary_structure_doc.name, employee = employee.name)
+		salary_slip.employee_name = employee.employee_name
 		salary_slip.payroll_frequency = payroll_frequency
 		salary_slip.posting_date = nowdate()
 		salary_slip.insert()
diff --git a/erpnext/payroll/doctype/salary_structure/test_salary_structure.py b/erpnext/payroll/doctype/salary_structure/test_salary_structure.py
index e7d123c..374dd7e 100644
--- a/erpnext/payroll/doctype/salary_structure/test_salary_structure.py
+++ b/erpnext/payroll/doctype/salary_structure/test_salary_structure.py
@@ -119,26 +119,25 @@
 	if test_tax:
 		frappe.db.sql("""delete from `tabSalary Structure` where name=%s""",(salary_structure))
 
-	if not frappe.db.exists('Salary Structure', salary_structure):
-		details = {
-			"doctype": "Salary Structure",
-			"name": salary_structure,
-			"company": company or erpnext.get_default_company(),
-			"earnings": make_earning_salary_component(setup=True,  test_tax=test_tax, company_list=["_Test Company"]),
-			"deductions": make_deduction_salary_component(setup=True, test_tax=test_tax, company_list=["_Test Company"]),
-			"payroll_frequency": payroll_frequency,
-			"payment_account": get_random("Account", filters={'account_currency': currency}),
-			"currency": currency
-		}
-		if other_details and isinstance(other_details, dict):
-			details.update(other_details)
-		salary_structure_doc = frappe.get_doc(details)
-		salary_structure_doc.insert()
-		if not dont_submit:
-			salary_structure_doc.submit()
+	if frappe.db.exists("Salary Structure", salary_structure):
+		frappe.db.delete("Salary Structure", salary_structure)
 
-	else:
-		salary_structure_doc = frappe.get_doc("Salary Structure", salary_structure)
+	details = {
+		"doctype": "Salary Structure",
+		"name": salary_structure,
+		"company": company or erpnext.get_default_company(),
+		"earnings": make_earning_salary_component(setup=True,  test_tax=test_tax, company_list=["_Test Company"]),
+		"deductions": make_deduction_salary_component(setup=True, test_tax=test_tax, company_list=["_Test Company"]),
+		"payroll_frequency": payroll_frequency,
+		"payment_account": get_random("Account", filters={"account_currency": currency}),
+		"currency": currency
+	}
+	if other_details and isinstance(other_details, dict):
+		details.update(other_details)
+	salary_structure_doc = frappe.get_doc(details)
+	salary_structure_doc.insert()
+	if not dont_submit:
+		salary_structure_doc.submit()
 
 	filters = {'employee':employee, 'docstatus': 1}
 	if not from_date and payroll_period:
diff --git a/erpnext/payroll/report/bank_remittance/bank_remittance.py b/erpnext/payroll/report/bank_remittance/bank_remittance.py
index 500543c..05a5366 100644
--- a/erpnext/payroll/report/bank_remittance/bank_remittance.py
+++ b/erpnext/payroll/report/bank_remittance/bank_remittance.py
@@ -95,6 +95,7 @@
 				"amount": salary.net_pay,
 			}
 			data.append(row)
+
 	return columns, data
 
 def get_bank_accounts():
@@ -116,7 +117,7 @@
 	entries = get_all("Payroll Entry", payroll_filter, ["name", "payment_account"])
 
 	payment_accounts = [d.payment_account for d in entries]
-	set_company_account(payment_accounts, entries)
+	entries = set_company_account(payment_accounts, entries)
 	return entries
 
 def get_salary_slips(payroll_entries):
diff --git a/erpnext/public/js/controllers/taxes_and_totals.js b/erpnext/public/js/controllers/taxes_and_totals.js
index 0471704..181e340 100644
--- a/erpnext/public/js/controllers/taxes_and_totals.js
+++ b/erpnext/public/js/controllers/taxes_and_totals.js
@@ -67,6 +67,8 @@
 
 	calculate_discount_amount(){
 		if (frappe.meta.get_docfield(this.frm.doc.doctype, "discount_amount")) {
+			this.calculate_item_values();
+			this.calculate_net_total();
 			this.set_discount_amount();
 			this.apply_discount_amount();
 		}
diff --git a/erpnext/public/js/help_links.js b/erpnext/public/js/help_links.js
index aa9bba1..5c9a453 100644
--- a/erpnext/public/js/help_links.js
+++ b/erpnext/public/js/help_links.js
@@ -991,7 +991,7 @@
 		label: "Nested BOM Structure",
 		url:
 			docsUrl +
-			"user/manual/en/manufacturing/articles/nested-bom-structure",
+			"user/manual/en/manufacturing/articles/managing-multi-level-bom",
 	},
 ];
 
diff --git a/erpnext/regional/india/e_invoice/einvoice.js b/erpnext/regional/india/e_invoice/einvoice.js
index 23d4fe9..8ad30fa 100644
--- a/erpnext/regional/india/e_invoice/einvoice.js
+++ b/erpnext/regional/india/e_invoice/einvoice.js
@@ -1,6 +1,8 @@
 erpnext.setup_einvoice_actions = (doctype) => {
 	frappe.ui.form.on(doctype, {
 		async refresh(frm) {
+			if (frm.doc.docstatus == 2) return;
+
 			const res = await frappe.call({
 				method: 'erpnext.regional.india.e_invoice.utils.validate_eligibility',
 				args: { doc: frm.doc }
@@ -111,7 +113,7 @@
 
 			if (irn && ewaybill && !irn_cancelled && !eway_bill_cancelled) {
 				const action = () => {
-					let message = __('Cancellation of e-way bill is currently not supported. ');
+					let message = __('Cancellation of e-way bill is currently not supported.') + ' ';
 					message += '<br><br>';
 					message += __('You must first use the portal to cancel the e-way bill and then update the cancelled status in the ERPNext system.');
 
diff --git a/erpnext/regional/india/e_invoice/utils.py b/erpnext/regional/india/e_invoice/utils.py
index 5d33c1b..81c7a6b 100644
--- a/erpnext/regional/india/e_invoice/utils.py
+++ b/erpnext/regional/india/e_invoice/utils.py
@@ -42,7 +42,10 @@
 	invalid_company = not frappe.db.get_value('E Invoice User', { 'company': doc.get('company') })
 	invalid_supply_type = doc.get('gst_category') not in ['Registered Regular', 'SEZ', 'Overseas', 'Deemed Export']
 	company_transaction = doc.get('billing_address_gstin') == doc.get('company_gstin')
-	no_taxes_applied = not doc.get('taxes')
+
+	# if export invoice, then taxes can be empty
+	# invoice can only be ineligible if no taxes applied and is not an export invoice
+	no_taxes_applied = not doc.get('taxes') and not doc.get('gst_category') == 'Overseas'
 	has_non_gst_item = any(d for d in doc.get('items', []) if d.get('is_non_gst'))
 
 	if invalid_company or invalid_supply_type or company_transaction or no_taxes_applied or has_non_gst_item:
@@ -188,9 +191,10 @@
 
 		item.qty = abs(item.qty)
 
-		item.unit_rate = abs((abs(item.taxable_value) - item.discount_amount)/ item.qty)
-		item.gross_amount = abs(item.taxable_value) + item.discount_amount
+		item.unit_rate = abs(item.taxable_value / item.qty)
+		item.gross_amount = abs(item.taxable_value)
 		item.taxable_value = abs(item.taxable_value)
+		item.discount_amount = 0
 
 		item.batch_expiry_date = frappe.db.get_value('Batch', d.batch_no, 'expiry_date') if d.batch_no else None
 		item.batch_expiry_date = format_date(item.batch_expiry_date, 'dd/mm/yyyy') if item.batch_expiry_date else None
diff --git a/erpnext/regional/report/gstr_1/gstr_1.py b/erpnext/regional/report/gstr_1/gstr_1.py
index 1096159..cfcb8c3 100644
--- a/erpnext/regional/report/gstr_1/gstr_1.py
+++ b/erpnext/regional/report/gstr_1/gstr_1.py
@@ -584,7 +584,7 @@
 def get_json(filters, report_name, data):
 	filters = json.loads(filters)
 	report_data = json.loads(data)
-	gstin = get_company_gstin_number(filters["company"], filters["company_address"])
+	gstin = get_company_gstin_number(filters.get("company"), filters.get("company_address"))
 
 	fp = "%02d%s" % (getdate(filters["to_date"]).month, getdate(filters["to_date"]).year)
 
diff --git a/erpnext/selling/doctype/customer/customer.js b/erpnext/selling/doctype/customer/customer.js
index 825b170..2849466 100644
--- a/erpnext/selling/doctype/customer/customer.js
+++ b/erpnext/selling/doctype/customer/customer.js
@@ -130,6 +130,10 @@
 				erpnext.utils.make_pricing_rule(frm.doc.doctype, frm.doc.name);
 			}, __('Create'));
 
+			frm.add_custom_button(__('Get Customer Group Details'), function () {
+				frm.trigger("get_customer_group_details");
+			}, __('Actions'));
+
 			// indicator
 			erpnext.utils.set_party_dashboard_indicators(frm);
 
@@ -145,4 +149,15 @@
 		if(frm.doc.lead_name) frappe.model.clear_doc("Lead", frm.doc.lead_name);
 
 	},
-});
\ No newline at end of file
+	get_customer_group_details: function(frm) {
+		frappe.call({
+			method: "get_customer_group_details",
+			doc: frm.doc,
+			callback: function() {
+				frm.refresh();
+			}
+		});
+
+	}
+});
+
diff --git a/erpnext/selling/doctype/customer/customer.py b/erpnext/selling/doctype/customer/customer.py
index 818888c..3b62081 100644
--- a/erpnext/selling/doctype/customer/customer.py
+++ b/erpnext/selling/doctype/customer/customer.py
@@ -78,6 +78,29 @@
 			if sum(member.allocated_percentage or 0 for member in self.sales_team) != 100:
 				frappe.throw(_("Total contribution percentage should be equal to 100"))
 
+	@frappe.whitelist()
+	def get_customer_group_details(self):
+		doc = frappe.get_doc('Customer Group', self.customer_group)
+		self.accounts = self.credit_limits = []
+		self.payment_terms = self.default_price_list = ""
+
+		tables = [["accounts", "account"], ["credit_limits", "credit_limit"]]
+		fields = ["payment_terms", "default_price_list"]
+
+		for row in tables:
+			table, field = row[0], row[1]
+			if not doc.get(table): continue
+
+			for entry in doc.get(table):
+				child = self.append(table)
+				child.update({"company": entry.company, field: entry.get(field)})
+
+		for field in fields:
+			if not doc.get(field): continue
+			self.update({field: doc.get(field)})
+
+		self.save()
+
 	def check_customer_group_change(self):
 		frappe.flags.customer_group_changed = False
 
diff --git a/erpnext/selling/doctype/customer/test_customer.py b/erpnext/selling/doctype/customer/test_customer.py
index 7761aa7..b1a5b52 100644
--- a/erpnext/selling/doctype/customer/test_customer.py
+++ b/erpnext/selling/doctype/customer/test_customer.py
@@ -27,6 +27,42 @@
 	def tearDown(self):
 		set_credit_limit('_Test Customer', '_Test Company', 0)
 
+	def test_get_customer_group_details(self):
+		doc = frappe.new_doc("Customer Group")
+		doc.customer_group_name = "_Testing Customer Group"
+		doc.payment_terms = "_Test Payment Term Template 3"
+		doc.accounts = []
+		doc.default_price_list = "Standard Buying"
+		doc.credit_limits = []
+		test_account_details = {
+			"company": "_Test Company",
+			"account": "Creditors - _TC",
+		}
+		test_credit_limits = {
+			"company": "_Test Company",
+			"credit_limit": 350000
+		}
+		doc.append("accounts", test_account_details)
+		doc.append("credit_limits", test_credit_limits)
+		doc.insert()
+
+		c_doc = frappe.new_doc("Customer")
+		c_doc.customer_name = "Testing Customer"
+		c_doc.customer_group = "_Testing Customer Group"
+		c_doc.payment_terms = c_doc.default_price_list = ""
+		c_doc.accounts = c_doc.credit_limits= []
+		c_doc.insert()
+		c_doc.get_customer_group_details()
+		self.assertEqual(c_doc.payment_terms, "_Test Payment Term Template 3")
+
+		self.assertEqual(c_doc.accounts[0].company, "_Test Company")
+		self.assertEqual(c_doc.accounts[0].account, "Creditors - _TC")
+
+		self.assertEqual(c_doc.credit_limits[0].company, "_Test Company")
+		self.assertEqual(c_doc.credit_limits[0].credit_limit, 350000)
+		c_doc.delete()
+		doc.delete()
+
 	def test_party_details(self):
 		from erpnext.accounts.party import get_party_details
 
diff --git a/erpnext/selling/page/point_of_sale/pos_item_cart.js b/erpnext/selling/page/point_of_sale/pos_item_cart.js
index 7cae0e4..f7b2c1d 100644
--- a/erpnext/selling/page/point_of_sale/pos_item_cart.js
+++ b/erpnext/selling/page/point_of_sale/pos_item_cart.js
@@ -472,12 +472,7 @@
 		const grand_total = cint(frappe.sys_defaults.disable_rounded_total) ? frm.doc.grand_total : frm.doc.rounded_total;
 		this.render_grand_total(grand_total);
 
-		const taxes = frm.doc.taxes.map(t => {
-			return {
-				description: t.description, rate: t.rate
-			};
-		});
-		this.render_taxes(frm.doc.total_taxes_and_charges, taxes);
+		this.render_taxes(frm.doc.taxes);
 	}
 
 	render_net_total(value) {
@@ -502,14 +497,14 @@
 		);
 	}
 
-	render_taxes(value, taxes) {
+	render_taxes(taxes) {
 		if (taxes.length) {
 			const currency = this.events.get_frm().doc.currency;
 			const taxes_html = taxes.map(t => {
 				const description = /[0-9]+/.test(t.description) ? t.description : `${t.description} @ ${t.rate}%`;
 				return `<div class="tax-row">
 					<div class="tax-label">${description}</div>
-					<div class="tax-value">${format_currency(value, currency)}</div>
+					<div class="tax-value">${format_currency(t.tax_amount_after_discount_amount, currency)}</div>
 				</div>`;
 			}).join('');
 			this.$totals_section.find('.taxes-container').css('display', 'flex').html(taxes_html);
@@ -970,8 +965,23 @@
 		});
 	}
 
+	attach_refresh_field_event(frm) {
+		$(frm.wrapper).off('refresh-fields');
+		$(frm.wrapper).on('refresh-fields', () => {
+			if (frm.doc.items.length) {
+				frm.doc.items.forEach(item => {
+					this.update_item_html(item);
+				});
+			}
+			this.update_totals_section(frm);
+		});
+	}
+
 	load_invoice() {
 		const frm = this.events.get_frm();
+		
+		this.attach_refresh_field_event(frm);
+
 		this.fetch_customer_details(frm.doc.customer).then(() => {
 			this.events.customer_details_updated(this.customer_info);
 			this.update_customer_section();
diff --git a/erpnext/selling/page/point_of_sale/pos_payment.js b/erpnext/selling/page/point_of_sale/pos_payment.js
index c484873..f1a166b 100644
--- a/erpnext/selling/page/point_of_sale/pos_payment.js
+++ b/erpnext/selling/page/point_of_sale/pos_payment.js
@@ -56,7 +56,7 @@
 				);
 				let df_events = {
 					onchange: function() {
-						frm.set_value(this.df.fieldname, this.value);
+						frm.set_value(this.df.fieldname, this.get_value());
 					}
 				};
 				if (df.fieldtype == "Button") {
diff --git a/erpnext/setup/doctype/company/company.py b/erpnext/setup/doctype/company/company.py
index 0427abe..8fd905d 100644
--- a/erpnext/setup/doctype/company/company.py
+++ b/erpnext/setup/doctype/company/company.py
@@ -395,7 +395,7 @@
 
 @frappe.whitelist()
 def enqueue_replace_abbr(company, old, new):
-	kwargs = dict(company=company, old=old, new=new)
+	kwargs = dict(queue="long", company=company, old=old, new=new)
 	frappe.enqueue('erpnext.setup.doctype.company.company.replace_abbr', **kwargs)
 
 
diff --git a/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py b/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py
index ece9fb5..691d331 100644
--- a/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py
+++ b/erpnext/setup/doctype/transaction_deletion_record/transaction_deletion_record.py
@@ -12,10 +12,14 @@
 class TransactionDeletionRecord(Document):
 	def validate(self):
 		frappe.only_for('System Manager')
+		self.validate_doctypes_to_be_ignored()
+
+	def validate_doctypes_to_be_ignored(self):
 		doctypes_to_be_ignored_list = get_doctypes_to_be_ignored()
 		for doctype in self.doctypes_to_be_ignored:
 			if doctype.doctype_name not in doctypes_to_be_ignored_list:
-				frappe.throw(_("DocTypes should not be added manually to the 'Excluded DocTypes' table. You are only allowed to remove entries from it. "), title=_("Not Allowed"))
+				frappe.throw(_("DocTypes should not be added manually to the 'Excluded DocTypes' table. You are only allowed to remove entries from it. "), 
+					title=_("Not Allowed"))
 
 	def before_submit(self):
 		if not self.doctypes_to_be_ignored:
@@ -23,54 +27,9 @@
 
 		self.delete_bins()
 		self.delete_lead_addresses()
-		
-		company_obj = frappe.get_doc('Company', self.company)
-		# reset company values
-		company_obj.total_monthly_sales = 0
-		company_obj.sales_monthly_history = None
-		company_obj.save()
-		# Clear notification counts
+		self.reset_company_values()
 		clear_notifications()
-
-		singles = frappe.get_all('DocType', filters = {'issingle': 1}, pluck = 'name')
-		tables = frappe.get_all('DocType', filters = {'istable': 1}, pluck = 'name')
-		doctypes_to_be_ignored_list = singles
-		for doctype in self.doctypes_to_be_ignored:
-			doctypes_to_be_ignored_list.append(doctype.doctype_name)
-
-		docfields = frappe.get_all('DocField', 
-			filters = {
-				'fieldtype': 'Link', 
-				'options': 'Company',
-				'parent': ['not in', doctypes_to_be_ignored_list]},
-			fields=['parent', 'fieldname'])
-	
-		for docfield in docfields:
-			if docfield['parent'] != self.doctype:
-				no_of_docs = frappe.db.count(docfield['parent'], {
-							docfield['fieldname'] : self.company
-						})
-
-				if no_of_docs > 0:
-					self.delete_version_log(docfield['parent'], docfield['fieldname'])
-					self.delete_communications(docfield['parent'], docfield['fieldname'])
-
-					# populate DocTypes table
-					if docfield['parent'] not in tables:
-						self.append('doctypes', {
-							'doctype_name' : docfield['parent'],
-							'no_of_docs' : no_of_docs
-						})
-
-					# delete the docs linked with the specified company
-					frappe.db.delete(docfield['parent'], {
-						docfield['fieldname'] : self.company
-					})
-
-					naming_series = frappe.db.get_value('DocType', docfield['parent'], 'autoname')
-					if naming_series:
-						if '#' in naming_series:
-							self.update_naming_series(naming_series, docfield['parent'])	
+		self.delete_company_transactions()
 
 	def populate_doctypes_to_be_ignored_table(self):		
 		doctypes_to_be_ignored_list = get_doctypes_to_be_ignored()
@@ -79,6 +38,111 @@
 						'doctype_name' : doctype
 					})
 
+	def delete_bins(self):
+		frappe.db.sql("""delete from tabBin where warehouse in
+				(select name from tabWarehouse where company=%s)""", self.company)
+
+	def delete_lead_addresses(self):
+		"""Delete addresses to which leads are linked"""
+		leads = frappe.get_all('Lead', filters={'company': self.company})
+		leads = ["'%s'" % row.get("name") for row in leads]
+		addresses = []
+		if leads:
+			addresses = frappe.db.sql_list("""select parent from `tabDynamic Link` where link_name
+				in ({leads})""".format(leads=",".join(leads)))
+
+			if addresses:
+				addresses = ["%s" % frappe.db.escape(addr) for addr in addresses]
+
+				frappe.db.sql("""delete from tabAddress where name in ({addresses}) and
+					name not in (select distinct dl1.parent from `tabDynamic Link` dl1
+					inner join `tabDynamic Link` dl2 on dl1.parent=dl2.parent
+					and dl1.link_doctype<>dl2.link_doctype)""".format(addresses=",".join(addresses)))
+
+				frappe.db.sql("""delete from `tabDynamic Link` where link_doctype='Lead'
+					and parenttype='Address' and link_name in ({leads})""".format(leads=",".join(leads)))
+
+			frappe.db.sql("""update tabCustomer set lead_name=NULL where lead_name in ({leads})""".format(leads=",".join(leads)))
+
+	def reset_company_values(self):
+		company_obj = frappe.get_doc('Company', self.company)
+		company_obj.total_monthly_sales = 0
+		company_obj.sales_monthly_history = None
+		company_obj.save()
+
+	def delete_company_transactions(self):
+		doctypes_to_be_ignored_list = self.get_doctypes_to_be_ignored_list()
+		docfields = self.get_doctypes_with_company_field(doctypes_to_be_ignored_list)
+
+		tables = self.get_all_child_doctypes()	
+		for docfield in docfields:
+			if docfield['parent'] != self.doctype:
+				no_of_docs = self.get_number_of_docs_linked_with_specified_company(docfield['parent'], docfield['fieldname'])
+
+				if no_of_docs > 0:
+					self.delete_version_log(docfield['parent'], docfield['fieldname'])
+					self.delete_communications(docfield['parent'], docfield['fieldname'])
+					self.populate_doctypes_table(tables, docfield['parent'], no_of_docs)
+
+					self.delete_child_tables(docfield['parent'], docfield['fieldname'])
+					self.delete_docs_linked_with_specified_company(docfield['parent'], docfield['fieldname'])
+
+					naming_series = frappe.db.get_value('DocType', docfield['parent'], 'autoname')
+					if naming_series:
+						if '#' in naming_series:
+							self.update_naming_series(naming_series, docfield['parent'])	
+
+	def get_doctypes_to_be_ignored_list(self):
+		singles = frappe.get_all('DocType', filters = {'issingle': 1}, pluck = 'name')
+		doctypes_to_be_ignored_list = singles
+		for doctype in self.doctypes_to_be_ignored:
+			doctypes_to_be_ignored_list.append(doctype.doctype_name)
+
+		return doctypes_to_be_ignored_list
+
+	def get_doctypes_with_company_field(self, doctypes_to_be_ignored_list):
+		docfields = frappe.get_all('DocField', 
+			filters = {
+				'fieldtype': 'Link', 
+				'options': 'Company',
+				'parent': ['not in', doctypes_to_be_ignored_list]},
+			fields=['parent', 'fieldname'])
+
+		return docfields
+
+	def get_all_child_doctypes(self):
+		return frappe.get_all('DocType', filters = {'istable': 1}, pluck = 'name')
+
+	def get_number_of_docs_linked_with_specified_company(self, doctype, company_fieldname):
+		return frappe.db.count(doctype, {company_fieldname : self.company})
+
+	def populate_doctypes_table(self, tables, doctype, no_of_docs):
+		if doctype not in tables:
+			self.append('doctypes', {
+				'doctype_name' : doctype,
+				'no_of_docs' : no_of_docs
+			})		
+
+	def delete_child_tables(self, doctype, company_fieldname):
+		parent_docs_to_be_deleted = frappe.get_all(doctype, {
+			company_fieldname : self.company
+		}, pluck = 'name')
+
+		child_tables = frappe.get_all('DocField', filters = {
+			'fieldtype': 'Table', 
+			'parent': doctype
+		}, pluck = 'options')
+
+		for table in child_tables:
+			frappe.db.delete(table, {
+				'parent': ['in', parent_docs_to_be_deleted]
+			})
+
+	def delete_docs_linked_with_specified_company(self, doctype, company_fieldname):
+		frappe.db.delete(doctype, {
+			company_fieldname : self.company
+		})
+
 	def update_naming_series(self, naming_series, doctype_name):
 		if '.' in naming_series:
 			prefix, hashes = naming_series.rsplit('.', 1)
@@ -107,32 +171,6 @@
 
 		frappe.delete_doc('Communication', communication_names, ignore_permissions=True)
 
-	def delete_bins(self):
-		frappe.db.sql("""delete from tabBin where warehouse in
-				(select name from tabWarehouse where company=%s)""", self.company)
-
-	def delete_lead_addresses(self):
-		"""Delete addresses to which leads are linked"""
-		leads = frappe.get_all('Lead', filters={'company': self.company})
-		leads = ["'%s'" % row.get("name") for row in leads]
-		addresses = []
-		if leads:
-			addresses = frappe.db.sql_list("""select parent from `tabDynamic Link` where link_name
-				in ({leads})""".format(leads=",".join(leads)))
-
-			if addresses:
-				addresses = ["%s" % frappe.db.escape(addr) for addr in addresses]
-
-				frappe.db.sql("""delete from tabAddress where name in ({addresses}) and
-					name not in (select distinct dl1.parent from `tabDynamic Link` dl1
-					inner join `tabDynamic Link` dl2 on dl1.parent=dl2.parent
-					and dl1.link_doctype<>dl2.link_doctype)""".format(addresses=",".join(addresses)))
-
-				frappe.db.sql("""delete from `tabDynamic Link` where link_doctype='Lead'
-					and parenttype='Address' and link_name in ({leads})""".format(leads=",".join(leads)))
-
-			frappe.db.sql("""update tabCustomer set lead_name=NULL where lead_name in ({leads})""".format(leads=",".join(leads)))
-
 @frappe.whitelist()
 def get_doctypes_to_be_ignored():
 	doctypes_to_be_ignored_list = ['Account', 'Cost Center', 'Warehouse', 'Budget',
diff --git a/erpnext/setup/utils.py b/erpnext/setup/utils.py
index 13269a8..d5dbd4c 100644
--- a/erpnext/setup/utils.py
+++ b/erpnext/setup/utils.py
@@ -28,21 +28,21 @@
 	from frappe.desk.page.setup_wizard.setup_wizard import setup_complete
 	if not frappe.get_list("Company"):
 		setup_complete({
-			"currency"			:"USD",
-			"full_name"			:"Test User",
-			"company_name"		:"Wind Power LLC",
-			"timezone"			:"America/New_York",
-			"company_abbr"		:"WP",
-			"industry"			:"Manufacturing",
-			"country"			:"United States",
-			"fy_start_date"		:"2011-01-01",
-			"fy_end_date"		:"2011-12-31",
-			"language"			:"english",
-			"company_tagline"	:"Testing",
-			"email"				:"test@erpnext.com",
-			"password"			:"test",
+			"currency"          :"USD",
+			"full_name"         :"Test User",
+			"company_name"      :"Wind Power LLC",
+			"timezone"          :"America/New_York",
+			"company_abbr"      :"WP",
+			"industry"          :"Manufacturing",
+			"country"           :"United States",
+			"fy_start_date"     :"2021-01-01",
+			"fy_end_date"       :"2021-12-31",
+			"language"          :"english",
+			"company_tagline"   :"Testing",
+			"email"             :"test@erpnext.com",
+			"password"          :"test",
 			"chart_of_accounts" : "Standard",
-			"domains"			: ["Manufacturing"],
+			"domains"           : ["Manufacturing"],
 		})
 
 	frappe.db.sql("delete from `tabLeave Allocation`")
diff --git a/erpnext/shopping_cart/product_query.py b/erpnext/shopping_cart/product_query.py
index 3eab4ff..6c92d96 100644
--- a/erpnext/shopping_cart/product_query.py
+++ b/erpnext/shopping_cart/product_query.py
@@ -87,7 +87,8 @@
 				filters=self.filters,
 				or_filters=self.or_filters,
 				start=start,
-				limit=self.page_length
+				limit=self.page_length,
+				order_by="weightage desc"
 			)
 
 		# Combine results having context of website item groups into item results
diff --git a/erpnext/stock/doctype/item/item.js b/erpnext/stock/doctype/item/item.js
index 45e3c21..568f0ef 100644
--- a/erpnext/stock/doctype/item/item.js
+++ b/erpnext/stock/doctype/item/item.js
@@ -93,7 +93,7 @@
 
 		erpnext.item.edit_prices_button(frm);
 		erpnext.item.toggle_attributes(frm);
-		
+
 		if (!frm.doc.is_fixed_asset) {
 			erpnext.item.make_dashboard(frm);
 		}
@@ -381,7 +381,8 @@
 		// Show Stock Levels only if is_stock_item
 		if (frm.doc.is_stock_item) {
 			frappe.require('item-dashboard.bundle.js', function() {
-				const section = frm.dashboard.add_section('', __("Stock Levels"));
+				frm.dashboard.parent.find('.stock-levels').remove();
+				const section = frm.dashboard.add_section('', __("Stock Levels"), 'stock-levels');
 				erpnext.item.item_dashboard = new erpnext.stock.ItemDashboard({
 					parent: section,
 					item_code: frm.doc.name,
diff --git a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
index 5df4d87..bf969f9 100644
--- a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
+++ b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
@@ -41,7 +41,7 @@
 
 	def validate(self):
 		self.check_mandatory()
-		self.validate_purchase_receipts()
+		self.validate_receipt_documents()
 		init_landed_taxes_and_totals(self)
 		self.set_total_taxes_and_charges()
 		if not self.get("items"):
@@ -56,14 +56,23 @@
 			frappe.throw(_("Please enter Receipt Document"))
 
 
-	def validate_purchase_receipts(self):
+	def validate_receipt_documents(self):
 		receipt_documents = []
 
 		for d in self.get("purchase_receipts"):
-			if frappe.db.get_value(d.receipt_document_type, d.receipt_document, "docstatus") != 1:
-				frappe.throw(_("Receipt document must be submitted"))
-			else:
-				receipt_documents.append(d.receipt_document)
+			docstatus = frappe.db.get_value(d.receipt_document_type, d.receipt_document, "docstatus")
+			if docstatus != 1:
+				msg = f"Row {d.idx}: {d.receipt_document_type} {frappe.bold(d.receipt_document)} must be submitted"
+				frappe.throw(_(msg), title=_("Invalid Document"))
+
+			if d.receipt_document_type == "Purchase Invoice":
+				update_stock = frappe.db.get_value(d.receipt_document_type, d.receipt_document, "update_stock")
+				if not update_stock:
+					msg = _("Row {0}: Purchase Invoice {1} has no stock impact.").format(d.idx, frappe.bold(d.receipt_document))
+					msg += "<br>" + _("Please create Landed Cost Vouchers against Invoices that have 'Update Stock' enabled.")
+					frappe.throw(msg, title=_("Incorrect Invoice"))
+
+			receipt_documents.append(d.receipt_document)
 
 		for item in self.get("items"):
 			if not item.receipt_document:
diff --git a/erpnext/stock/doctype/putaway_rule/putaway_rule.py b/erpnext/stock/doctype/putaway_rule/putaway_rule.py
index ea26cac..0f50bcd 100644
--- a/erpnext/stock/doctype/putaway_rule/putaway_rule.py
+++ b/erpnext/stock/doctype/putaway_rule/putaway_rule.py
@@ -97,7 +97,7 @@
 		at_capacity, rules = get_ordered_putaway_rules(item_code, company, source_warehouse=source_warehouse)
 
 		if not rules:
-			warehouse = source_warehouse or item.warehouse
+			warehouse = source_warehouse or item.get('warehouse')
 			if at_capacity:
 				# rules available, but no free space
 				items_not_accomodated.append([item_code, pending_qty])
diff --git a/erpnext/stock/doctype/quality_inspection/test_quality_inspection.py b/erpnext/stock/doctype/quality_inspection/test_quality_inspection.py
index 7f3d701..f5d076a 100644
--- a/erpnext/stock/doctype/quality_inspection/test_quality_inspection.py
+++ b/erpnext/stock/doctype/quality_inspection/test_quality_inspection.py
@@ -14,7 +14,7 @@
 )
 from erpnext.stock.doctype.delivery_note.test_delivery_note import create_delivery_note
 from erpnext.stock.doctype.item.test_item import create_item
-from erpnext.stock.doctype.stock_entry.test_stock_entry import make_stock_entry
+from erpnext.stock.doctype.stock_entry.stock_entry_utils import make_stock_entry
 
 # test_records = frappe.get_test_records('Quality Inspection')
 
@@ -159,6 +159,47 @@
 			frappe.delete_doc("Quality Inspection", qi)
 		dn.delete()
 
+	def test_rejected_qi_validation(self):
+		"""Test if rejected QI blocks Stock Entry as per Stock Settings."""
+		se = make_stock_entry(
+			item_code="_Test Item with QA",
+			target="_Test Warehouse - _TC",
+			qty=1,
+			basic_rate=100,
+			inspection_required=True,
+			do_not_submit=True
+		)
+
+		readings = [
+			{
+				"specification": "Iron Content",
+				"min_value": 0.1,
+				"max_value": 0.9,
+				"reading_1": "0.4"
+			}
+		]
+
+		qa = create_quality_inspection(
+			reference_type="Stock Entry",
+			reference_name=se.name,
+			readings=readings,
+			status="Rejected"
+		)
+
+		frappe.db.set_value("Stock Settings", None, "action_if_quality_inspection_is_rejected", "Stop")
+		se.reload()
+		self.assertRaises(QualityInspectionRejectedError, se.submit) # when blocked in Stock settings, block rejected QI
+
+		frappe.db.set_value("Stock Settings", None, "action_if_quality_inspection_is_rejected", "Warn")
+		se.reload()
+		se.submit() # when allowed in Stock settings, allow rejected QI
+
+		# teardown
+		qa.reload()
+		qa.cancel()
+		se.reload()
+		se.cancel()
+		frappe.db.set_value("Stock Settings", None, "action_if_quality_inspection_is_rejected", "Stop")
 
 def create_quality_inspection(**args):
 	args = frappe._dict(args)
@@ -175,12 +216,11 @@
 	if not args.readings:
 		create_quality_inspection_parameter("Size")
 		readings = {"specification": "Size", "min_value": 0, "max_value": 10}
+		if args.status == "Rejected":
+			readings["reading_1"] = "12"  # status is auto set in child on save
 	else:
 		readings = args.readings
 
-	if args.status == "Rejected":
-		readings["reading_1"] = "12"  # status is auto set in child on save
-
 	if isinstance(readings, list):
 		for entry in readings:
 			create_quality_inspection_parameter(entry["specification"])
diff --git a/erpnext/stock/doctype/stock_entry/stock_entry.py b/erpnext/stock/doctype/stock_entry/stock_entry.py
index 8f27ef4..90b81dd 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry.py
+++ b/erpnext/stock/doctype/stock_entry/stock_entry.py
@@ -529,7 +529,7 @@
 		scrap_items_cost = sum([flt(d.basic_amount) for d in self.get("items") if d.is_scrap_item])
 
 		# Get raw materials cost from BOM if multiple material consumption entries
-		if frappe.db.get_single_value("Manufacturing Settings", "material_consumption"):
+		if frappe.db.get_single_value("Manufacturing Settings", "material_consumption", cache=True):
 			bom_items = self.get_bom_raw_materials(finished_item_qty)
 			outgoing_items_cost = sum([flt(row.qty)*flt(row.rate) for row in bom_items.values()])
 
diff --git a/erpnext/stock/doctype/stock_entry/stock_entry_utils.py b/erpnext/stock/doctype/stock_entry/stock_entry_utils.py
index b12a854..563fcb0 100644
--- a/erpnext/stock/doctype/stock_entry/stock_entry_utils.py
+++ b/erpnext/stock/doctype/stock_entry/stock_entry_utils.py
@@ -45,6 +45,8 @@
 		s.posting_date = args.posting_date
 	if args.posting_time:
 		s.posting_time = args.posting_time
+	if args.inspection_required:
+		s.inspection_required = args.inspection_required
 
 	# map names
 	if args.from_warehouse:
diff --git a/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.json b/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.json
index a178283..22f412a 100644
--- a/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.json
+++ b/erpnext/stock/doctype/stock_entry_detail/stock_entry_detail.json
@@ -307,6 +307,7 @@
    "fieldname": "quality_inspection",
    "fieldtype": "Link",
    "label": "Quality Inspection",
+   "no_copy": 1,
    "options": "Quality Inspection"
   },
   {
@@ -548,7 +549,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2021-04-22 20:08:23.799715",
+ "modified": "2021-06-21 16:03:18.834880",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Stock Entry Detail",
diff --git a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
index 0febcb6..cb939e6 100644
--- a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
+++ b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
@@ -178,3 +178,4 @@
 
 	frappe.db.add_index("Stock Ledger Entry", ["voucher_no", "voucher_type"])
 	frappe.db.add_index("Stock Ledger Entry", ["batch_no", "item_code", "warehouse"])
+	frappe.db.add_index("Stock Ledger Entry", ["voucher_detail_no"])
diff --git a/erpnext/stock/doctype/stock_settings/stock_settings.json b/erpnext/stock/doctype/stock_settings/stock_settings.json
index cf5d98d..2a9dcfb 100644
--- a/erpnext/stock/doctype/stock_settings/stock_settings.json
+++ b/erpnext/stock/doctype/stock_settings/stock_settings.json
@@ -23,7 +23,10 @@
   "allow_negative_stock",
   "show_barcode_field",
   "clean_description_html",
+  "quality_inspection_settings_section",
   "action_if_quality_inspection_is_not_submitted",
+  "column_break_21",
+  "action_if_quality_inspection_is_rejected",
   "section_break_7",
   "automatically_set_serial_nos_based_on_fifo",
   "set_qty_in_transactions_based_on_serial_no_input",
@@ -264,6 +267,22 @@
   {
    "fieldname": "column_break_31",
    "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "quality_inspection_settings_section",
+   "fieldtype": "Section Break",
+   "label": "Quality Inspection Settings"
+  },
+  {
+   "fieldname": "column_break_21",
+   "fieldtype": "Column Break"
+  },
+  {
+   "default": "Stop",
+   "fieldname": "action_if_quality_inspection_is_rejected",
+   "fieldtype": "Select",
+   "label": "Action If Quality Inspection Is Rejected",
+   "options": "Stop\nWarn"
   }
  ],
  "icon": "icon-cog",
@@ -271,7 +290,7 @@
  "index_web_pages_for_search": 1,
  "issingle": 1,
  "links": [],
- "modified": "2021-04-30 17:27:42.709231",
+ "modified": "2021-07-10 16:17:42.159829",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Stock Settings",
diff --git a/erpnext/stock/stock_ledger.py b/erpnext/stock/stock_ledger.py
index 4e9c768..c15d1ed 100644
--- a/erpnext/stock/stock_ledger.py
+++ b/erpnext/stock/stock_ledger.py
@@ -6,13 +6,14 @@
 import erpnext
 import copy
 from frappe import _
-from frappe.utils import cint, flt, cstr, now, get_link_to_form
+from frappe.utils import cint, flt, cstr, now, get_link_to_form, getdate
 from frappe.model.meta import get_field_precision
 from erpnext.stock.utils import get_valuation_method, get_incoming_outgoing_rate_for_cancel
 from erpnext.stock.utils import get_bin
 import json
 from six import iteritems
 
+
 # future reposting
 class NegativeStockError(frappe.ValidationError): pass
 class SerialNoExistsInFutureTransaction(frappe.ValidationError):
@@ -130,7 +131,13 @@
 	if not args and voucher_type and voucher_no:
 		args = get_args_for_voucher(voucher_type, voucher_no)
 
-	distinct_item_warehouses = [(d.item_code, d.warehouse) for d in args]
+	distinct_item_warehouses = {}
+	for i, d in enumerate(args):
+		distinct_item_warehouses.setdefault((d.item_code, d.warehouse), frappe._dict({
+			"reposting_status": False,
+			"sle": d,
+			"args_idx": i
+		}))
 
 	i = 0
 	while i < len(args):
@@ -139,13 +146,21 @@
 			"warehouse": args[i].warehouse,
 			"posting_date": args[i].posting_date,
 			"posting_time": args[i].posting_time,
-			"creation": args[i].get("creation")
+			"creation": args[i].get("creation"),
+			"distinct_item_warehouses": distinct_item_warehouses
 		}, allow_negative_stock=allow_negative_stock, via_landed_cost_voucher=via_landed_cost_voucher)
 
-		for item_wh, new_sle in iteritems(obj.new_items):
-			if item_wh not in distinct_item_warehouses:
-				args.append(new_sle)
+		distinct_item_warehouses[(args[i].item_code, args[i].warehouse)].reposting_status = True
 
+		if obj.new_items_found:
+			for item_wh, data in iteritems(distinct_item_warehouses):
+				if ('args_idx' not in data and not data.reposting_status) or (data.sle_changed and data.reposting_status):
+					data.args_idx = len(args)
+					args.append(data.sle)
+				elif data.sle_changed and not data.reposting_status:
+					args[data.args_idx] = data.sle
+				
+				data.sle_changed = False
 		i += 1
 
 def get_args_for_voucher(voucher_type, voucher_no):
@@ -186,11 +201,12 @@
 		self.company = frappe.get_cached_value("Warehouse", self.args.warehouse, "company")
 		self.get_precision()
 		self.valuation_method = get_valuation_method(self.item_code)
-		self.new_items = {}
+
+		self.new_items_found = False
+		self.distinct_item_warehouses = args.get("distinct_item_warehouses", frappe._dict())
 
 		self.data = frappe._dict()
 		self.initialize_previous_data(self.args)
-
 		self.build()
 
 	def get_precision(self):
@@ -296,11 +312,29 @@
 		elif dependant_sle.item_code == self.item_code and dependant_sle.warehouse == self.args.warehouse:
 			return entries_to_fix
 		elif dependant_sle.item_code != self.item_code:
-			if (dependant_sle.item_code, dependant_sle.warehouse) not in self.new_items:
-				self.new_items[(dependant_sle.item_code, dependant_sle.warehouse)] = dependant_sle
+			self.update_distinct_item_warehouses(dependant_sle)
 			return entries_to_fix
 		elif dependant_sle.item_code == self.item_code and dependant_sle.warehouse in self.data:
 			return entries_to_fix
+		else:
+			return self.append_future_sle_for_dependant(dependant_sle, entries_to_fix)
+
+	def update_distinct_item_warehouses(self, dependant_sle):
+		key = (dependant_sle.item_code, dependant_sle.warehouse)
+		val = frappe._dict({
+			"sle": dependant_sle
+		})
+		if key not in self.distinct_item_warehouses:
+			self.distinct_item_warehouses[key] = val
+			self.new_items_found = True
+		else:
+			existing_sle_posting_date = self.distinct_item_warehouses[key].get("sle", {}).get("posting_date")
+			if getdate(dependant_sle.posting_date) < getdate(existing_sle_posting_date):
+				val.sle_changed = True
+				self.distinct_item_warehouses[key] = val
+				self.new_items_found = True
+
+	def append_future_sle_for_dependant(self, dependant_sle, entries_to_fix):
 		self.initialize_previous_data(dependant_sle)
 
 		args = self.data[dependant_sle.warehouse].previous_sle \
@@ -393,6 +427,7 @@
 		rate = 0
 		# Material Transfer, Repack, Manufacturing
 		if sle.voucher_type == "Stock Entry":
+			self.recalculate_amounts_in_stock_entry(sle.voucher_no)
 			rate = frappe.db.get_value("Stock Entry Detail", sle.voucher_detail_no, "valuation_rate")
 		# Sales and Purchase Return
 		elif sle.voucher_type in ("Purchase Receipt", "Purchase Invoice", "Delivery Note", "Sales Invoice"):
@@ -442,7 +477,11 @@
 		frappe.db.set_value("Stock Entry Detail", sle.voucher_detail_no, "basic_rate", outgoing_rate)
 
 		# Update outgoing item's rate, recalculate FG Item's rate and total incoming/outgoing amount
-		stock_entry = frappe.get_doc("Stock Entry", sle.voucher_no, for_update=True)
+		if not sle.dependant_sle_voucher_detail_no:
+			self.recalculate_amounts_in_stock_entry(sle.voucher_no)
+
+	def recalculate_amounts_in_stock_entry(self, voucher_no):
+		stock_entry = frappe.get_doc("Stock Entry", voucher_no, for_update=True)
 		stock_entry.calculate_rate_and_amount(reset_outgoing_rate=False, raise_error_if_no_rate=False)
 		stock_entry.db_update()
 		for d in stock_entry.items:
diff --git a/erpnext/support/doctype/issue/issue.py b/erpnext/support/doctype/issue/issue.py
index dd6d647..b9a65b6 100644
--- a/erpnext/support/doctype/issue/issue.py
+++ b/erpnext/support/doctype/issue/issue.py
@@ -5,10 +5,10 @@
 import frappe
 import json
 from frappe import _
-from frappe import utils
 from frappe.model.document import Document
-from frappe.utils import now_datetime
-from datetime import datetime, timedelta
+from frappe.utils import now_datetime, time_diff_in_seconds, get_datetime, date_diff
+from frappe.core.utils import get_parent_doc
+from datetime import timedelta
 from frappe.model.mapper import get_mapped_doc
 from frappe.utils.user import is_website_user
 from frappe.email.inbox import link_communication_to_document
@@ -212,7 +212,129 @@
 
 	return issue.name
 
+def get_time_in_timedelta(time):
+	"""
+		Converts datetime.time(10, 36, 55, 961454) to datetime.timedelta(seconds=38215)
+	"""
+	return timedelta(hours=time.hour, minutes=time.minute, seconds=time.second)
+
+def set_first_response_time(communication, method):
+	if communication.get('reference_doctype') == "Issue":
+		issue = get_parent_doc(communication)
+		if is_first_response(issue):
+			first_response_time = calculate_first_response_time(issue, get_datetime(issue.first_responded_on))
+			issue.db_set("first_response_time", first_response_time)
+
+def is_first_response(issue):
+	responses = frappe.get_all('Communication', filters = {'reference_name': issue.name, 'sent_or_received': 'Sent'})
+	if len(responses) == 1: 
+		return True
+	return False
+
+def calculate_first_response_time(issue, first_responded_on):
+	issue_creation_date = issue.creation
+	issue_creation_time = get_time_in_seconds(issue_creation_date)
+	first_responded_on_in_seconds = get_time_in_seconds(first_responded_on)
+	support_hours = frappe.get_cached_doc("Service Level Agreement", issue.service_level_agreement).support_and_resolution
+
+	if issue_creation_date.day == first_responded_on.day:
+		if is_work_day(issue_creation_date, support_hours):
+			start_time, end_time = get_working_hours(issue_creation_date, support_hours)
+
+			# issue creation and response on the same day during working hours
+			if is_during_working_hours(issue_creation_date, support_hours) and is_during_working_hours(first_responded_on, support_hours):
+				return get_elapsed_time(issue_creation_date, first_responded_on)
+
+			# issue creation is during working hours, but first response was after working hours
+			elif is_during_working_hours(issue_creation_date, support_hours):
+				return get_elapsed_time(issue_creation_time, end_time)
+
+			# issue creation was before working hours but first response is during working hours
+			elif is_during_working_hours(first_responded_on, support_hours):
+				return get_elapsed_time(start_time, first_responded_on_in_seconds)
+
+			# both issue creation and first response were after working hours
+			else:
+				return 1.0		# this should ideally be zero, but it gets reset when the next response is sent if the value is zero
+			
+		else:
+			return 1.0
+
+	else:
+		# response on the next day
+		if date_diff(first_responded_on, issue_creation_date) == 1:
+			first_response_time = 0
+		else:
+			first_response_time = calculate_initial_frt(issue_creation_date, date_diff(first_responded_on, issue_creation_date)- 1, support_hours)
+
+		# time taken on day of issue creation
+		if is_work_day(issue_creation_date, support_hours):
+			start_time, end_time = get_working_hours(issue_creation_date, support_hours)
+
+			if is_during_working_hours(issue_creation_date, support_hours):
+				first_response_time += get_elapsed_time(issue_creation_time, end_time)
+			elif is_before_working_hours(issue_creation_date, support_hours):
+				first_response_time += get_elapsed_time(start_time, end_time)
+
+		# time taken on day of first response
+		if is_work_day(first_responded_on, support_hours):
+			start_time, end_time = get_working_hours(first_responded_on, support_hours)
+
+			if is_during_working_hours(first_responded_on, support_hours):
+				first_response_time += get_elapsed_time(start_time, first_responded_on_in_seconds)
+			elif not is_before_working_hours(first_responded_on, support_hours):
+				first_response_time += get_elapsed_time(start_time, end_time)
+
+		if first_response_time:
+			return first_response_time
+		else:
+			return 1.0
+
+def get_time_in_seconds(date):
+	return timedelta(hours=date.hour, minutes=date.minute, seconds=date.second)
+
+def get_working_hours(date, support_hours):
+	if is_work_day(date, support_hours):
+		weekday = frappe.utils.get_weekday(date)
+		for day in support_hours:
+			if day.workday == weekday:
+				return day.start_time, day.end_time
+
+def is_work_day(date, support_hours):
+	weekday = frappe.utils.get_weekday(date)
+	for day in support_hours:
+		if day.workday == weekday:
+			return True
+	return False
+
+def is_during_working_hours(date, support_hours):
+	start_time, end_time = get_working_hours(date, support_hours)
+	time = get_time_in_seconds(date)
+	if time >= start_time and time <= end_time:
+		return True
+	return False
+
+def get_elapsed_time(start_time, end_time):
+	return round(time_diff_in_seconds(end_time, start_time), 2)
+
+def calculate_initial_frt(issue_creation_date, days_in_between, support_hours):
+	initial_frt = 0
+	for i in range(days_in_between):
+		date = issue_creation_date + timedelta(days = (i+1))
+		if is_work_day(date, support_hours):
+			start_time, end_time = get_working_hours(date, support_hours)
+			initial_frt += get_elapsed_time(start_time, end_time)
+
+	return initial_frt
+
+def is_before_working_hours(date, support_hours):
+	start_time, end_time = get_working_hours(date, support_hours)
+	time = get_time_in_seconds(date)
+	if time < start_time:
+		return True
+	return False
+
 def get_holidays(holiday_list_name):
 	holiday_list = frappe.get_cached_doc("Holiday List", holiday_list_name)
 	holidays = [holiday.holiday_date for holiday in holiday_list.holidays]
-	return holidays
\ No newline at end of file
+	return holidays
diff --git a/erpnext/support/doctype/issue/test_issue.py b/erpnext/support/doctype/issue/test_issue.py
index 7b9b144..84f8c39 100644
--- a/erpnext/support/doctype/issue/test_issue.py
+++ b/erpnext/support/doctype/issue/test_issue.py
@@ -5,16 +5,18 @@
 import frappe
 import unittest
 from erpnext.support.doctype.service_level_agreement.test_service_level_agreement import create_service_level_agreements_for_issues
-from frappe.utils import now_datetime, get_datetime, flt
+from frappe.core.doctype.user_permission.test_user_permission import create_user
+from frappe.utils import get_datetime, flt
 import datetime
 from datetime import timedelta
 
-class TestIssue(unittest.TestCase):
+class TestSetUp(unittest.TestCase):
 	def setUp(self):
 		frappe.db.sql("delete from `tabService Level Agreement`")
 		frappe.db.set_value("Support Settings", None, "track_service_level_agreement", 1)
 		create_service_level_agreements_for_issues()
 
+class TestIssue(TestSetUp):
 	def test_response_time_and_resolution_time_based_on_different_sla(self):
 		creation = datetime.datetime(2019, 3, 4, 12, 0)
 
@@ -133,6 +135,223 @@
 		issue.reload()
 		self.assertEqual(flt(issue.total_hold_time, 2), 2700)
 
+class TestFirstResponseTime(TestSetUp):
+	# working hours used in all cases: Mon-Fri, 10am to 6pm
+	# all dates are in the mm-dd-yyyy format
+
+	# issue creation and first response are on the same day
+	def test_first_response_time_case1(self):
+		"""
+			Test frt when issue creation and first response are during working hours on the same day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 11:00"), get_datetime("06-28-2021 12:00"))
+		self.assertEqual(issue.first_response_time, 3600.0)
+
+	def test_first_response_time_case2(self):
+		"""
+			Test frt when issue creation was during working hours, but first response is sent after working hours on the same day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 12:00"), get_datetime("06-28-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 21600.0)
+
+	def test_first_response_time_case3(self):
+		"""
+			Test frt when issue creation was before working hours but first response is sent during working hours on the same day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 6:00"), get_datetime("06-28-2021 12:00"))
+		self.assertEqual(issue.first_response_time, 7200.0)
+
+	def test_first_response_time_case4(self):
+		"""
+			Test frt when both issue creation and first response were after working hours on the same day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 19:00"), get_datetime("06-28-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 1.0)
+
+	def test_first_response_time_case5(self):
+		"""
+			Test frt when both issue creation and first response are on the same day, but it's not a work day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-27-2021 10:00"), get_datetime("06-27-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 1.0)
+
+	# issue creation and first response are on consecutive days
+	def test_first_response_time_case6(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is also sent before working hours, but on the next day. 
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 6:00"), get_datetime("06-29-2021 6:00"))
+		self.assertEqual(issue.first_response_time, 28800.0)
+
+	def test_first_response_time_case7(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is sent during working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 6:00"), get_datetime("06-29-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 32400.0)
+
+	def test_first_response_time_case8(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is sent after working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 6:00"), get_datetime("06-29-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 57600.0)
+
+	def test_first_response_time_case9(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is sent on the next day, which is not a work day.
+		""" 
+		issue = create_issue_and_communication(get_datetime("06-25-2021 6:00"), get_datetime("06-26-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 28800.0)
+
+	def test_first_response_time_case10(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is sent before working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 12:00"), get_datetime("06-29-2021 6:00"))
+		self.assertEqual(issue.first_response_time, 21600.0)
+
+	def test_first_response_time_case11(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is also sent during working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 12:00"), get_datetime("06-29-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 25200.0)
+
+	def test_first_response_time_case12(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is sent after working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 12:00"), get_datetime("06-29-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 50400.0)
+
+	def test_first_response_time_case13(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is sent on the next day, which is not a work day.
+		""" 
+		issue = create_issue_and_communication(get_datetime("06-25-2021 12:00"), get_datetime("06-26-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 21600.0)
+
+	def test_first_response_time_case14(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is sent before working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 20:00"), get_datetime("06-29-2021 6:00"))
+		self.assertEqual(issue.first_response_time, 1.0)
+
+	def test_first_response_time_case15(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is sent during working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 20:00"), get_datetime("06-29-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 3600.0)
+
+	def test_first_response_time_case16(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is also sent after working hours, but on the next day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 20:00"), get_datetime("06-29-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 28800.0)
+
+	def test_first_response_time_case17(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is sent on the next day, which is not a work day.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-25-2021 20:00"), get_datetime("06-26-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 1.0)
+
+	# issue creation and first response are a few days apart
+	def test_first_response_time_case18(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is also sent before working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 6:00"), get_datetime("07-01-2021 6:00"))
+		self.assertEqual(issue.first_response_time, 86400.0)
+
+	def test_first_response_time_case19(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is sent during working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 6:00"), get_datetime("07-01-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 90000.0)
+
+	def test_first_response_time_case20(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is sent after working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 6:00"), get_datetime("07-01-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 115200.0)
+
+	def test_first_response_time_case21(self):
+		"""
+			Test frt when the issue was created before working hours and the first response is sent after a few days, on a holiday.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-25-2021 6:00"), get_datetime("06-27-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 28800.0)
+
+	def test_first_response_time_case22(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is sent before working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 12:00"), get_datetime("07-01-2021 6:00"))
+		self.assertEqual(issue.first_response_time, 79200.0)
+
+	def test_first_response_time_case23(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is also sent during working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 12:00"), get_datetime("07-01-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 82800.0)
+
+	def test_first_response_time_case24(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is sent after working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 12:00"), get_datetime("07-01-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 108000.0)
+
+	def test_first_response_time_case25(self):
+		"""
+			Test frt when the issue was created during working hours and the first response is sent after a few days, on a holiday.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-25-2021 12:00"), get_datetime("06-27-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 21600.0)
+
+	def test_first_response_time_case26(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is sent before working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 20:00"), get_datetime("07-01-2021 6:00"))
+		self.assertEqual(issue.first_response_time, 57600.0)
+
+	def test_first_response_time_case27(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is sent during working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 20:00"), get_datetime("07-01-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 61200.0)
+
+	def test_first_response_time_case28(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is also sent after working hours, but after a few days.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-28-2021 20:00"), get_datetime("07-01-2021 20:00"))
+		self.assertEqual(issue.first_response_time, 86400.0)
+
+	def test_first_response_time_case29(self):
+		"""
+			Test frt when the issue was created after working hours and the first response is sent after a few days, on a holiday.
+		"""
+		issue = create_issue_and_communication(get_datetime("06-25-2021 20:00"), get_datetime("06-27-2021 11:00"))
+		self.assertEqual(issue.first_response_time, 1.0)
+	
+def create_issue_and_communication(issue_creation, first_responded_on):
+	issue = make_issue(issue_creation, index=1)
+	sender = create_user("test@admin.com")
+	create_communication(issue.name, sender.email, "Sent", first_responded_on)
+	issue.reload()
+
+	return issue
 
 def make_issue(creation=None, customer=None, index=0, priority=None, issue_type=None):
 	issue = frappe.get_doc({
@@ -185,7 +404,7 @@
 
 
 def create_communication(reference_name, sender, sent_or_received, creation):
-	issue = frappe.get_doc({
+	communication = frappe.get_doc({
 		"doctype": "Communication",
 		"communication_type": "Communication",
 		"communication_medium": "Email",
@@ -199,4 +418,4 @@
 		"creation": creation,
 		"reference_name": reference_name
 	})
-	issue.save()
+	communication.save()
\ No newline at end of file
diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement.js b/erpnext/support/doctype/service_level_agreement/service_level_agreement.js
index 308bce4..ae2080c 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement.js
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement.js
@@ -5,15 +5,15 @@
 	setup: function(frm) {
 		if (cint(frm.doc.apply_sla_for_resolution) === 1) {
 			frm.get_field('priorities').grid.editable_fields = [
-				{fieldname: 'priority', columns: 1},
 				{fieldname: 'default_priority', columns: 1},
+				{fieldname: 'priority', columns: 2},
 				{fieldname: 'response_time', columns: 2},
 				{fieldname: 'resolution_time', columns: 2}
 			];
 		} else {
 			frm.get_field('priorities').grid.editable_fields = [
-				{fieldname: 'priority', columns: 1},
 				{fieldname: 'default_priority', columns: 1},
+				{fieldname: 'priority', columns: 2},
 				{fieldname: 'response_time', columns: 3},
 			];
 		}
diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement.json b/erpnext/support/doctype/service_level_agreement/service_level_agreement.json
index de3389a..ef14b29 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement.json
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement.json
@@ -1,6 +1,6 @@
 {
  "actions": [],
- "autoname": "format:SLA-{document_type}-{service_level}-{####}",
+ "autoname": "format:SLA-{document_type}-{service_level}",
  "creation": "2018-12-26 21:08:15.448812",
  "doctype": "DocType",
  "editable_grid": 1,
diff --git a/erpnext/support/doctype/service_level_agreement/service_level_agreement.py b/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
index 60e5fbe..8739cb2 100644
--- a/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
+++ b/erpnext/support/doctype/service_level_agreement/service_level_agreement.py
@@ -797,7 +797,7 @@
 	if meta.has_field("response_by"):
 		doc.response_by = get_expected_time_for(parameter="response", service_level=priority, start_date_time=start_date_time)
 
-	if meta.has_field("response_by_variance"):
+	if meta.has_field("response_by_variance") and not doc.get('first_responded_on'):
 		now_time = frappe.flags.current_time or now_datetime(doc.get("owner"))
 		doc.response_by_variance = round(time_diff_in_seconds(doc.response_by, now_time), 2)
 
@@ -805,7 +805,7 @@
 	if meta.has_field("resolution_by"):
 		doc.resolution_by = get_expected_time_for(parameter="resolution", service_level=priority, start_date_time=start_date_time)
 
-	if meta.has_field("resolution_by_variance"):
+	if meta.has_field("resolution_by_variance") and not doc.get("resolution_date"):
 		now_time = frappe.flags.current_time or now_datetime(doc.get("owner"))
 		doc.resolution_by_variance = round(time_diff_in_seconds(doc.resolution_by, now_time), 2)
 
diff --git a/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py b/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py
index 7c18a65..7bc97d6 100644
--- a/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py
+++ b/erpnext/support/doctype/service_level_agreement/test_service_level_agreement.py
@@ -217,6 +217,42 @@
 		lead.reload()
 		self.assertEqual(lead.agreement_status, 'Fulfilled')
 
+	def test_changing_of_variance_after_response(self):
+		# create lead
+		doctype = "Lead"
+		lead_sla = create_service_level_agreement(
+			default_service_level_agreement=1,
+			holiday_list="__Test Holiday List",
+			entity_type=None, entity=None,
+			response_time=14400,
+			doctype=doctype,
+			sla_fulfilled_on=[{"status": "Replied"}],
+			apply_sla_for_resolution=0
+		)
+		creation = datetime.datetime(2019, 3, 4, 12, 0)
+		lead = make_lead(creation=creation, index=2)
+		self.assertEqual(lead.service_level_agreement, lead_sla.name)
+
+		# set lead as replied to set first responded on
+		frappe.flags.current_time = datetime.datetime(2019, 3, 4, 15, 30)
+		lead.reload()
+		lead.status = 'Replied'
+		lead.save()
+		lead.reload()
+		self.assertEqual(lead.agreement_status, 'Fulfilled')
+
+		# check response_by_variance
+		self.assertEqual(lead.first_responded_on, frappe.flags.current_time)
+		self.assertEqual(lead.response_by_variance, 1800.0)
+
+		# make a change on the document &
+		# check response_by_variance is unchanged
+		frappe.flags.current_time = datetime.datetime(2019, 3, 4, 18, 30)
+		lead.status = 'Open'
+		lead.save()
+		lead.reload()
+		self.assertEqual(lead.response_by_variance, 1800.0)
+
 	def tearDown(self):
 		for d in frappe.get_all("Service Level Agreement"):
 			frappe.delete_doc("Service Level Agreement", d.name, force=1)
@@ -249,7 +285,7 @@
 		"doctype": "Service Level Agreement",
 		"enabled": 1,
 		"document_type": doctype,
-		"service_level": "__Test Service Level",
+		"service_level": "__Test {} SLA".format(entity_type if entity_type else "Default"),
 		"default_service_level_agreement": default_service_level_agreement,
 		"default_priority": "Medium",
 		"holiday_list": holiday_list,
@@ -303,16 +339,6 @@
 				"workday": "Friday",
 				"start_time": "10:00:00",
 				"end_time": "18:00:00",
-			},
-			{
-				"workday": "Saturday",
-				"start_time": "10:00:00",
-				"end_time": "18:00:00",
-			},
-			{
-				"workday": "Sunday",
-				"start_time": "10:00:00",
-				"end_time": "18:00:00",
 			}
 		]
 	})
diff --git a/erpnext/support/doctype/service_level_priority/service_level_priority.json b/erpnext/support/doctype/service_level_priority/service_level_priority.json
index 0367fc6..b410fe6 100644
--- a/erpnext/support/doctype/service_level_priority/service_level_priority.json
+++ b/erpnext/support/doctype/service_level_priority/service_level_priority.json
@@ -5,9 +5,9 @@
  "editable_grid": 1,
  "engine": "InnoDB",
  "field_order": [
-  "priority",
-  "cb_01",
   "default_priority",
+  "cb_01",
+  "priority",
   "sb_00",
   "response_time",
   "cb_00",
@@ -15,7 +15,7 @@
  ],
  "fields": [
   {
-   "columns": 1,
+   "columns": 2,
    "fieldname": "priority",
    "fieldtype": "Link",
    "in_list_view": 1,
@@ -64,7 +64,7 @@
  ],
  "istable": 1,
  "links": [],
- "modified": "2021-05-29 19:52:51.733248",
+ "modified": "2021-06-21 12:00:58.089962",
  "modified_by": "Administrator",
  "module": "Support",
  "name": "Service Level Priority",