fix(pos): multiple pos fixes and additions (#24227)

* fix: make custom fields in pos invoice similar to sales invoice

* feat: allow/disallow rate & discount change

* fix: any pos profile can be selected while creating pos opening

* fix: cannot add item to cart

* fix: validate phone payment only if payment request exists

* fix: replace pos payment method patch

* chore: rearrange item & customer group filter

* fix: allow/disallow invoice level discount

* fix: updating qty of item with uom having space char

* fix: move configuration checbox to config section

* fix: invalid item rate trigger

* fix: cannot remove item from draft invoices

* fix: customer currency not set in pos invoice

* fix: duplicate item error message

* fix: sales uom not fetched in pos invoice

* fix: cannot add taxes to pos invoice for uae region

* fix: cannot merge pos invoice into credit note

* fix: tax calculation while merging pos invoices

* feat: delete draft orders from order list

* fix: merging of pos invoice with pricing rules
diff --git a/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py b/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py
index 52e9ff8..ef0d3a3 100644
--- a/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py
+++ b/erpnext/accounts/doctype/accounting_dimension/accounting_dimension.py
@@ -165,9 +165,9 @@
 		frappe.clear_cache(doctype=doctype)
 
 def get_doctypes_with_dimensions():
-	doclist = ["GL Entry", "Sales Invoice", "Purchase Invoice", "Payment Entry", "Asset",
+	doclist = ["GL Entry", "Sales Invoice", "POS Invoice", "Purchase Invoice", "Payment Entry", "Asset",
 		"Expense Claim", "Expense Claim Detail", "Expense Taxes and Charges", "Stock Entry", "Budget", "Payroll Entry", "Delivery Note",
-		"Sales Invoice Item", "Purchase Invoice Item", "Purchase Order Item", "Journal Entry Account", "Material Request Item", "Delivery Note Item",
+		"Sales Invoice Item", "POS Invoice Item", "Purchase Invoice Item", "Purchase Order Item", "Journal Entry Account", "Material Request Item", "Delivery Note Item",
 		"Purchase Receipt Item", "Stock Entry Detail", "Payment Entry Deduction", "Sales Taxes and Charges", "Purchase Taxes and Charges", "Shipping Rule",
 		"Landed Cost Item", "Asset Value Adjustment", "Loyalty Program", "Fee Schedule", "Fee Structure", "Stock Reconciliation",
 		"Travel Request", "Fees", "POS Profile", "Opening Invoice Creation Tool", "Opening Invoice Creation Tool Item", "Subscription",
diff --git a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
index 2b91c74..c26e14f 100644
--- a/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
+++ b/erpnext/accounts/doctype/pos_closing_entry/pos_closing_entry.py
@@ -57,7 +57,11 @@
 		if not invalid_rows:
 			return
 
-		error_list = [_("Row #{}: {}").format(row.get('idx'), row.get('msg')) for row in invalid_rows]
+		error_list = []
+		for row in invalid_rows:
+			for msg in row.get('msg'):
+				error_list.append(_("Row #{}: {}").format(row.get('idx'), msg))
+
 		frappe.throw(error_list, title=_("Invalid POS Invoices"), as_list=True)
 
 	def on_submit(self):
diff --git a/erpnext/accounts/doctype/pos_invoice/pos_invoice.js b/erpnext/accounts/doctype/pos_invoice/pos_invoice.js
index 86062d1..ae968d9 100644
--- a/erpnext/accounts/doctype/pos_invoice/pos_invoice.js
+++ b/erpnext/accounts/doctype/pos_invoice/pos_invoice.js
@@ -2,6 +2,7 @@
 // For license information, please see license.txt
 
 {% include 'erpnext/selling/sales_common.js' %};
+frappe.provide("erpnext.accounts");
 
 erpnext.selling.POSInvoiceController = erpnext.selling.SellingController.extend({
 	setup(doc) {
@@ -9,12 +10,18 @@
 		this._super(doc);
 	},
 
+	company: function() {
+		erpnext.accounts.dimensions.update_dimension(this.frm, this.frm.doctype);
+	},
+
 	onload(doc) {
 		this._super();
 		if(doc.__islocal && doc.is_pos && frappe.get_route_str() !== 'point-of-sale') {
 			this.frm.script_manager.trigger("is_pos");
 			this.frm.refresh_fields();
 		}
+
+		erpnext.accounts.dimensions.setup_dimension_filters(this.frm, this.frm.doctype);
 	},
 
 	refresh(doc) {
diff --git a/erpnext/accounts/doctype/pos_invoice/pos_invoice.py b/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
index ac98dcc..71ddcf5 100644
--- a/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
+++ b/erpnext/accounts/doctype/pos_invoice/pos_invoice.py
@@ -78,7 +78,7 @@
 						mode_of_payment=pay.mode_of_payment, status="Paid"),
 					fieldname="grand_total")
 
-				if pay.amount != paid_amt:
+				if paid_amt and pay.amount != paid_amt:
 					return frappe.throw(_("Payment related to {0} is not completed").format(pay.mode_of_payment))
 
 	def validate_stock_availablility(self):
@@ -297,7 +297,9 @@
 						self.set(fieldname, profile.get(fieldname))
 
 			if self.customer:
-				customer_price_list, customer_group = frappe.db.get_value("Customer", self.customer, ['default_price_list', 'customer_group'])
+				customer_price_list, customer_group, customer_currency = frappe.db.get_value(
+					"Customer", self.customer, ['default_price_list', 'customer_group', 'default_currency']
+				)
 				customer_group_price_list = frappe.db.get_value("Customer Group", customer_group, 'default_price_list')
 				selling_price_list = customer_price_list or customer_group_price_list or profile.get('selling_price_list')
 			else:
@@ -305,6 +307,8 @@
 
 			if selling_price_list:
 				self.set('selling_price_list', selling_price_list)
+			if customer_currency != profile.get('currency'):
+				self.set('currency', customer_currency)
 
 			# set pos values in items
 			for item in self.get("items"):
diff --git a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
index add27e9..1539d5f 100644
--- a/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
+++ b/erpnext/accounts/doctype/pos_invoice_merge_log/pos_invoice_merge_log.py
@@ -5,10 +5,10 @@
 from __future__ import unicode_literals
 import frappe
 from frappe import _
-from frappe.utils import cint, flt, add_months, today, date_diff, getdate, add_days, cstr, nowdate
-from frappe.model.document import Document
-from frappe.model.mapper import map_doc
 from frappe.model import default_fields
+from frappe.model.document import Document
+from frappe.model.mapper import map_doc, map_child_doc
+from frappe.utils import flt, getdate, nowdate
 
 from six import iteritems
 
@@ -83,7 +83,7 @@
 
 		credit_note.is_consolidated = 1
 		# TODO: return could be against multiple sales invoice which could also have been consolidated?
-		credit_note.return_against = self.consolidated_invoice
+		# credit_note.return_against = self.consolidated_invoice
 		credit_note.save()
 		credit_note.submit()
 		self.consolidated_credit_note = credit_note.name
@@ -111,7 +111,9 @@
 						i.qty = i.qty + item.qty
 				if not found:
 					item.rate = item.net_rate
-					items.append(item)
+					item.price_list_rate = 0
+					si_item = map_child_doc(item, invoice, {"doctype": "Sales Invoice Item"})
+					items.append(si_item)
 			
 			for tax in doc.get('taxes'):
 				found = False
@@ -147,6 +149,8 @@
 		invoice.set('taxes', taxes)
 		invoice.additional_discount_percentage = 0
 		invoice.discount_amount = 0.0
+		invoice.taxes_and_charges = None
+		invoice.ignore_pricing_rule = 1
 
 		return invoice
 	
diff --git a/erpnext/accounts/doctype/pos_profile/pos_profile.json b/erpnext/accounts/doctype/pos_profile/pos_profile.json
index d856ae3..4b69f6e 100644
--- a/erpnext/accounts/doctype/pos_profile/pos_profile.json
+++ b/erpnext/accounts/doctype/pos_profile/pos_profile.json
@@ -12,8 +12,6 @@
   "company",
   "country",
   "column_break_9",
-  "update_stock",
-  "ignore_pricing_rule",
   "warehouse",
   "campaign",
   "company_address",
@@ -25,8 +23,14 @@
   "hide_images",
   "hide_unavailable_items",
   "auto_add_item_to_cart",
-  "item_groups",
   "column_break_16",
+  "update_stock",
+  "ignore_pricing_rule",
+  "allow_rate_change",
+  "allow_discount_change",
+  "section_break_23",
+  "item_groups",
+  "column_break_25",
   "customer_groups",
   "section_break_16",
   "print_format",
@@ -309,6 +313,7 @@
    "default": "1",
    "fieldname": "update_stock",
    "fieldtype": "Check",
+   "hidden": 1,
    "label": "Update Stock",
    "read_only": 1
   },
@@ -329,13 +334,34 @@
    "fieldname": "auto_add_item_to_cart",
    "fieldtype": "Check",
    "label": "Automatically Add Filtered Item To Cart"
+  },
+  {
+   "default": "0",
+   "fieldname": "allow_rate_change",
+   "fieldtype": "Check",
+   "label": "Allow User to Edit Rate"
+  },
+  {
+   "default": "0",
+   "fieldname": "allow_discount_change",
+   "fieldtype": "Check",
+   "label": "Allow User to Edit Discount"
+  },
+  {
+   "collapsible": 1,
+   "fieldname": "section_break_23",
+   "fieldtype": "Section Break"
+  },
+  {
+   "fieldname": "column_break_25",
+   "fieldtype": "Column Break"
   }
  ],
  "icon": "icon-cog",
  "idx": 1,
  "index_web_pages_for_search": 1,
  "links": [],
- "modified": "2020-12-10 13:59:28.877572",
+ "modified": "2021-01-06 14:42:41.713864",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "POS Profile",
diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 7116a6a..6304438 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -435,7 +435,9 @@
 			if not for_validate and not self.customer:
 				self.customer = pos.customer
 
-			self.ignore_pricing_rule = pos.ignore_pricing_rule
+			if not for_validate:
+				self.ignore_pricing_rule = pos.ignore_pricing_rule
+
 			if pos.get('account_for_change_amount'):
 				self.account_for_change_amount = pos.get('account_for_change_amount')
 
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index 9d9d1b3..2f4eb81 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -302,6 +302,7 @@
 					args["doctype"] = self.doctype
 					args["name"] = self.name
 					args["child_docname"] = item.name
+					args["ignore_pricing_rule"] = self.ignore_pricing_rule if hasattr(self, 'ignore_pricing_rule') else 0
 
 					if not args.get("transaction_date"):
 						args["transaction_date"] = args.get("posting_date")
diff --git a/erpnext/controllers/sales_and_purchase_return.py b/erpnext/controllers/sales_and_purchase_return.py
index a048d6e..0e1829a 100644
--- a/erpnext/controllers/sales_and_purchase_return.py
+++ b/erpnext/controllers/sales_and_purchase_return.py
@@ -262,6 +262,7 @@
 
 		if doc.get("is_return"):
 			if doc.doctype == 'Sales Invoice' or doc.doctype == 'POS Invoice':
+				doc.consolidated_invoice = ""
 				doc.set('payments', [])
 				for data in source.payments:
 					paid_amount = 0.00
diff --git a/erpnext/controllers/selling_controller.py b/erpnext/controllers/selling_controller.py
index e085048..a774a95 100644
--- a/erpnext/controllers/selling_controller.py
+++ b/erpnext/controllers/selling_controller.py
@@ -469,13 +469,19 @@
 				non_stock_items = [d.item_code, d.description]
 
 			if frappe.db.get_value("Item", d.item_code, "is_stock_item") == 1:
+				duplicate_items_msg = _("Item {0} entered multiple times.").format(frappe.bold(d.item_code))
+				duplicate_items_msg += "<br><br>"
+				duplicate_items_msg += _("Please enable {} in {} to allow same item in multiple rows").format(
+					frappe.bold("Allow Item to Be Added Multiple Times in a Transaction"),
+					get_link_to_form("Selling Settings", "Selling Settings")
+				)
 				if stock_items in check_list:
-					frappe.throw(_("Note: Item {0} entered multiple times").format(d.item_code))
+					frappe.throw(duplicate_items_msg)
 				else:
 					check_list.append(stock_items)
 			else:
 				if non_stock_items in chk_dupl_itm:
-					frappe.throw(_("Note: Item {0} entered multiple times").format(d.item_code))
+					frappe.throw(duplicate_items_msg)
 				else:
 					chk_dupl_itm.append(non_stock_items)
 
diff --git a/erpnext/controllers/taxes_and_totals.py b/erpnext/controllers/taxes_and_totals.py
index 76309f8..fd744a7 100644
--- a/erpnext/controllers/taxes_and_totals.py
+++ b/erpnext/controllers/taxes_and_totals.py
@@ -107,7 +107,7 @@
 					elif item.discount_amount and item.pricing_rules:
 						item.rate =  item.price_list_rate - item.discount_amount
 
-				if item.doctype in ['Quotation Item', 'Sales Order Item', 'Delivery Note Item', 'Sales Invoice Item']:
+				if item.doctype in ['Quotation Item', 'Sales Order Item', 'Delivery Note Item', 'Sales Invoice Item', 'POS Invoice Item']:
 					item.rate_with_margin, item.base_rate_with_margin = self.calculate_margin(item)
 					if flt(item.rate_with_margin) > 0:
 						item.rate = flt(item.rate_with_margin * (1.0 - (item.discount_percentage / 100.0)), item.precision("rate"))
diff --git a/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py b/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py
index 4e86d36..49f6d95 100644
--- a/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py
+++ b/erpnext/erpnext_integrations/doctype/mpesa_settings/test_mpesa_settings.py
@@ -44,6 +44,7 @@
 		create_mpesa_settings(payment_gateway_name="Payment")
 		mpesa_account = frappe.db.get_value("Payment Gateway Account", {"payment_gateway": 'Mpesa-Payment'}, "payment_account")
 		frappe.db.set_value("Account", mpesa_account, "account_currency", "KES")
+		frappe.db.set_value("Customer", "_Test Customer", "default_currency", "KES")
 
 		pos_invoice = create_pos_invoice(do_not_submit=1)
 		pos_invoice.append("payments", {'mode_of_payment': 'Mpesa-Payment', 'account': mpesa_account, 'amount': 500})
@@ -69,6 +70,8 @@
 		self.assertEquals(pos_invoice.mpesa_receipt_number, "LGR7OWQX0R")
 		self.assertEquals(integration_request.status, "Completed")
 
+		frappe.db.set_value("Customer", "_Test Customer", "default_currency", "")
+
 def create_mpesa_settings(payment_gateway_name="Express"):
 	if frappe.db.exists("Mpesa Settings", payment_gateway_name):
 		return frappe.get_doc("Mpesa Settings", payment_gateway_name)
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index f3660b3..7e438a4 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -677,7 +677,7 @@
 erpnext.patches.v12_0.fix_quotation_expired_status
 erpnext.patches.v12_0.update_appointment_reminder_scheduler_entry
 erpnext.patches.v12_0.rename_pos_closing_doctype
-erpnext.patches.v13_0.replace_pos_payment_mode_table
+erpnext.patches.v13_0.replace_pos_payment_mode_table #2020-12-29
 erpnext.patches.v12_0.remove_duplicate_leave_ledger_entries #2020-05-22
 erpnext.patches.v13_0.patch_to_fix_reverse_linking_in_additional_salary_encashment_and_incentive
 execute:frappe.reload_doc("HR", "doctype", "Employee Advance")
@@ -743,6 +743,7 @@
 erpnext.patches.v13_0.create_leave_policy_assignment_based_on_employee_current_leave_policy
 erpnext.patches.v13_0.add_po_to_global_search
 erpnext.patches.v13_0.update_returned_qty_in_pr_dn
+erpnext.patches.v13_0.create_uae_pos_invoice_fields
 erpnext.patches.v13_0.update_project_template_tasks
 erpnext.patches.v13_0.set_company_in_leave_ledger_entry
 erpnext.patches.v13_0.convert_qi_parameter_to_link_field
diff --git a/erpnext/patches/v13_0/create_uae_pos_invoice_fields.py b/erpnext/patches/v13_0/create_uae_pos_invoice_fields.py
new file mode 100644
index 0000000..48d5cb4
--- /dev/null
+++ b/erpnext/patches/v13_0/create_uae_pos_invoice_fields.py
@@ -0,0 +1,14 @@
+# Copyright (c) 2019, Frappe and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+
+import frappe
+from erpnext.regional.united_arab_emirates.setup import make_custom_fields
+
+def execute():
+	company = frappe.get_all('Company', filters = {'country': ['in', ['Saudi Arabia', 'United Arab Emirates']]})
+	if not company:
+		return
+
+	make_custom_fields()
\ No newline at end of file
diff --git a/erpnext/patches/v13_0/replace_pos_payment_mode_table.py b/erpnext/patches/v13_0/replace_pos_payment_mode_table.py
index 1ca211b..7cb2648 100644
--- a/erpnext/patches/v13_0/replace_pos_payment_mode_table.py
+++ b/erpnext/patches/v13_0/replace_pos_payment_mode_table.py
@@ -6,12 +6,10 @@
 import frappe
 
 def execute():
-	frappe.reload_doc("accounts", "doctype", "POS Payment Method")
+	frappe.reload_doc("accounts", "doctype", "pos_payment_method")
 	pos_profiles = frappe.get_all("POS Profile")
 
 	for pos_profile in pos_profiles:
-		if not pos_profile.get("payments"): return
-
 		payments = frappe.db.sql("""
 			select idx, parentfield, parenttype, parent, mode_of_payment, `default` from `tabSales Invoice Payment` where parent=%s
 		""", pos_profile.name, as_dict=1)
diff --git a/erpnext/regional/united_arab_emirates/setup.py b/erpnext/regional/united_arab_emirates/setup.py
index 013ae5c..776a82c 100644
--- a/erpnext/regional/united_arab_emirates/setup.py
+++ b/erpnext/regional/united_arab_emirates/setup.py
@@ -110,9 +110,11 @@
 		'Purchase Order': purchase_invoice_fields + invoice_fields,
 		'Purchase Receipt': purchase_invoice_fields + invoice_fields,
 		'Sales Invoice': sales_invoice_fields + invoice_fields,
+		'POS Invoice': sales_invoice_fields + invoice_fields,
 		'Sales Order': sales_invoice_fields + invoice_fields,
 		'Delivery Note': sales_invoice_fields + invoice_fields,
 		'Sales Invoice Item': invoice_item_fields + delivery_date_field + [is_zero_rated, is_exempt],
+		'POS Invoice Item': invoice_item_fields + delivery_date_field + [is_zero_rated, is_exempt],
 		'Purchase Invoice Item': invoice_item_fields,
 		'Sales Order Item': invoice_item_fields,
 		'Delivery Note Item': invoice_item_fields,
diff --git a/erpnext/selling/page/point_of_sale/pos_controller.js b/erpnext/selling/page/point_of_sale/pos_controller.js
index d4cde43..45b4e30 100644
--- a/erpnext/selling/page/point_of_sale/pos_controller.js
+++ b/erpnext/selling/page/point_of_sale/pos_controller.js
@@ -69,6 +69,10 @@
 				dialog.fields_dict.balance_details.grid.refresh();
 			});
 		}
+		const pos_profile_query = {
+			query: 'erpnext.accounts.doctype.pos_profile.pos_profile.pos_profile_query',
+			filters: { company: frappe.defaults.get_default('company') }
+		}
 		const dialog = new frappe.ui.Dialog({
 			title: __('Create POS Opening Entry'),
 			static: true,
@@ -80,6 +84,7 @@
 				{
 					fieldtype: 'Link', label: __('POS Profile'),
 					options: 'POS Profile', fieldname: 'pos_profile', reqd: 1,
+					get_query: () => pos_profile_query,
 					onchange: () => fetch_pos_payment_methods()
 				},
 				{
@@ -124,9 +129,8 @@
 		});
 
 		frappe.db.get_doc("POS Profile", this.pos_profile).then((profile) => {
+			Object.assign(this.settings, profile);
 			this.settings.customer_groups = profile.customer_groups.map(group => group.customer_group);
-			this.settings.hide_images = profile.hide_images;
-			this.settings.auto_add_item_to_cart = profile.auto_add_item_to_cart;
 			this.make_app();
 		});
 	}
@@ -255,11 +259,9 @@
 				get_frm: () => this.frm,
 
 				cart_item_clicked: (item_code, batch_no, uom) => {
-					const item_row = this.frm.doc.items.find(
-						i => i.item_code === item_code 
-							&& i.uom === uom
-							&& (!batch_no || (batch_no && i.batch_no === batch_no))
-					);
+					const search_field = batch_no ? 'batch_no' : 'item_code';
+					const search_value = batch_no || item_code;
+					const item_row = this.frm.doc.items.find(i => i[search_field] === search_value && i.uom === uom);
 					this.item_details.toggle_item_details_section(item_row);
 				},
 
@@ -281,6 +283,7 @@
 	init_item_details() {
 		this.item_details = new erpnext.PointOfSale.ItemDetails({
 			wrapper: this.$components_wrapper,
+			settings: this.settings,
 			events: {
 				get_frm: () => this.frm,
 
@@ -415,6 +418,11 @@
 						() => this.item_selector.toggle_component(true)
 					]);
 				},
+				delete_order: (name) => {
+					frappe.model.delete_doc(this.frm.doc.doctype, name, () => {
+						this.recent_order_list.refresh_list();
+					});
+				},
 				new_order: () => {
 					frappe.run_serially([
 						() => frappe.dom.freeze(),
@@ -696,14 +704,14 @@
 		frappe.dom.freeze();
 		const { doctype, name, current_item } = this.item_details;
 
-		frappe.model.set_value(doctype, name, 'qty', 0);
-
-		this.frm.script_manager.trigger('qty', doctype, name).then(() => {
-			frappe.model.clear_doc(doctype, name);
-			this.update_cart_html(current_item, true);
-			this.item_details.toggle_item_details_section(undefined);
-			frappe.dom.unfreeze();
-		})
+		frappe.model.set_value(doctype, name, 'qty', 0)
+			.then(() => {
+				frappe.model.clear_doc(doctype, name);
+				this.update_cart_html(current_item, true);
+				this.item_details.toggle_item_details_section(undefined);
+				frappe.dom.unfreeze();
+			})
+			.catch(e => console.log(e));
 	}
 }
 
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 3938300..cc47245 100644
--- a/erpnext/selling/page/point_of_sale/pos_item_cart.js
+++ b/erpnext/selling/page/point_of_sale/pos_item_cart.js
@@ -5,6 +5,8 @@
 		this.customer_info = undefined;
 		this.hide_images = settings.hide_images;
 		this.allowed_customer_groups = settings.customer_groups;
+		this.allow_rate_change = settings.allow_rate_change;
+		this.allow_discount_change = settings.allow_discount_change;
 		
 		this.init_component();
 	}
@@ -201,7 +203,7 @@
 			me.events.checkout();
 			me.toggle_checkout_btn(false);
 
-			me.$add_discount_elem.removeClass("d-none");
+			me.allow_discount_change && me.$add_discount_elem.removeClass("d-none");
 		});
 
 		this.$totals_section.on('click', '.edit-cart-btn', () => {
@@ -479,11 +481,15 @@
 	update_totals_section(frm) {
 		if (!frm) frm = this.events.get_frm();
 
-		this.render_net_total(frm.doc.base_net_total);
-		this.render_grand_total(frm.doc.base_grand_total);
+		this.render_net_total(frm.doc.net_total);
+		this.render_grand_total(frm.doc.grand_total);
 
-		const taxes = frm.doc.taxes.map(t => { return { description: t.description, rate: t.rate }})
-		this.render_taxes(frm.doc.base_total_taxes_and_charges, taxes);
+		const taxes = frm.doc.taxes.map(t => {
+			return {
+				description: t.description, rate: t.rate
+			}
+		});
+		this.render_taxes(frm.doc.total_taxes_and_charges, taxes);
 	}
 	
 	render_net_total(value) {
@@ -545,7 +551,7 @@
 	get_cart_item({ item_code, batch_no, uom }) {
 		const batch_attr = `[data-batch-no="${escape(batch_no)}"]`;
 		const item_code_attr = `[data-item-code="${escape(item_code)}"]`;
-		const uom_attr = `[data-uom=${escape(uom)}]`;
+		const uom_attr = `[data-uom="${escape(uom)}"]`;
 
 		const item_selector = batch_no ? 
 			`.cart-item-wrapper${batch_attr}${uom_attr}` : `.cart-item-wrapper${item_code_attr}${uom_attr}`;
@@ -667,7 +673,7 @@
 	
 	update_selector_value_in_cart_item(selector, value, item) {
 		const $item_to_update = this.get_cart_item(item);
-		$item_to_update.attr(`data-${selector}`, value);
+		$item_to_update.attr(`data-${selector}`, escape(value));
 	}
 
 	toggle_checkout_btn(show_checkout) {
@@ -702,14 +708,26 @@
 	on_numpad_event($btn) {
 		const current_action = $btn.attr('data-button-value');
 		const action_is_field_edit = ['qty', 'discount_percentage', 'rate'].includes(current_action);
-
-		this.highlight_numpad_btn($btn, current_action);
+		const action_is_allowed = action_is_field_edit ? (
+			(current_action == 'rate' && this.allow_rate_change) ||
+			(current_action == 'discount_percentage' && this.allow_discount_change) ||
+			(current_action == 'qty')) : true;
 
 		const action_is_pressed_twice = this.prev_action === current_action;
 		const first_click_event = !this.prev_action;
 		const field_to_edit_changed = this.prev_action && this.prev_action != current_action;
 
 		if (action_is_field_edit) {
+			if (!action_is_allowed) {
+				const label = current_action == 'rate' ? 'Rate'.bold() : 'Discount'.bold();
+				const message = __('Editing {0} is not allowed as per POS Profile settings', [label]);
+				frappe.show_alert({
+					indicator: 'red',
+					message: message
+				});
+				frappe.utils.play_sound("error");
+				return;
+			}
 
 			if (first_click_event || field_to_edit_changed) {
 				this.prev_action = current_action;
@@ -753,6 +771,7 @@
 			this.numpad_value = current_action;
 		}
 
+		this.highlight_numpad_btn($btn, current_action);
 		this.events.numpad_event(this.numpad_value, this.prev_action);
 	}
 	
diff --git a/erpnext/selling/page/point_of_sale/pos_item_details.js b/erpnext/selling/page/point_of_sale/pos_item_details.js
index a4de9f1..259631d 100644
--- a/erpnext/selling/page/point_of_sale/pos_item_details.js
+++ b/erpnext/selling/page/point_of_sale/pos_item_details.js
@@ -1,7 +1,9 @@
 erpnext.PointOfSale.ItemDetails = class {
-	constructor({ wrapper, events }) {
+	constructor({ wrapper, events, settings }) {
 		this.wrapper = wrapper;
 		this.events = events;
+		this.allow_rate_change = settings.allow_rate_change;
+		this.allow_discount_change = settings.allow_discount_change;
 		this.current_item = {};
 
 		this.init_component();
@@ -207,17 +209,27 @@
 	bind_custom_control_change_event() {
 		const me = this;
 		if (this.rate_control) {
-			this.rate_control.df.onchange = function() {
-				if (this.value || flt(this.value) === 0) {
-					me.events.form_updated(me.doctype, me.name, 'rate', this.value).then(() => {
-						const item_row = frappe.get_doc(me.doctype, me.name);
-						const doc = me.events.get_frm().doc;
-
-						me.$item_price.html(format_currency(item_row.rate, doc.currency));
-						me.render_discount_dom(item_row);
-					});
-				}
+			if (this.allow_rate_change) {
+				this.rate_control.df.onchange = function() {
+					if (this.value || flt(this.value) === 0) {
+						me.events.form_updated(me.doctype, me.name, 'rate', this.value).then(() => {
+							const item_row = frappe.get_doc(me.doctype, me.name);
+							const doc = me.events.get_frm().doc;
+	
+							me.$item_price.html(format_currency(item_row.rate, doc.currency));
+							me.render_discount_dom(item_row);
+						});
+					}
+				};
+			} else {
+				this.rate_control.df.read_only = 1;
 			}
+			this.rate_control.refresh();
+		}
+
+		if (this.discount_percentage_control && !this.allow_discount_change) {
+			this.discount_percentage_control.df.read_only = 1;
+			this.discount_percentage_control.refresh();
 		}
 
 		if (this.warehouse_control) {
@@ -294,8 +306,16 @@
 		}
 
 		frappe.model.on("POS Invoice Item", "*", (fieldname, value, item_row) => {
+			const { item_code, batch_no, uom } = this.current_item; 
+			const item_code_is_same = item_code === item_row.item_code;
+			const batch_is_same = batch_no == item_row.batch_no;
+			const uom_is_same = uom === item_row.uom;
+			// check if current_item is same as item_row
+			const item_is_same = item_code_is_same && batch_is_same && uom_is_same ? true : false;
+
 			const field_control = me[`${fieldname}_control`];
-			if (field_control) {
+			
+			if (item_is_same && field_control && field_control.get_value() !== value) {
 				field_control.set_value(value);
 				cur_pos.update_cart_html(item_row);
 			}
diff --git a/erpnext/selling/page/point_of_sale/pos_past_order_summary.js b/erpnext/selling/page/point_of_sale/pos_past_order_summary.js
index 6fd4c26..598f50f 100644
--- a/erpnext/selling/page/point_of_sale/pos_past_order_summary.js
+++ b/erpnext/selling/page/point_of_sale/pos_past_order_summary.js
@@ -265,6 +265,14 @@
 			this.$summary_wrapper.addClass('d-none');
 		});
 
+		this.$summary_container.on('click', '.delete-btn', () => {
+			this.events.delete_order(this.doc.name);
+			this.show_summary_placeholder();
+			// this.toggle_component(false);
+			// this.$component.find('.no-summary-placeholder').removeClass('d-none');
+			// this.$summary_wrapper.addClass('d-none');
+		});
+
 		this.$summary_container.on('click', '.new-btn', () => {
 			this.events.new_order();
 			this.toggle_component(false);
@@ -401,7 +409,7 @@
 			return [{ condition: true, visible_btns: ['Print Receipt', 'Email Receipt', 'New Order'] }];
 
 		return [
-			{ condition: this.doc.docstatus === 0, visible_btns: ['Edit Order'] },
+			{ condition: this.doc.docstatus === 0, visible_btns: ['Edit Order', 'Delete Order'] },
 			{ condition: !this.doc.is_return && this.doc.docstatus === 1, visible_btns: ['Print Receipt', 'Email Receipt', 'Return']},
 			{ condition: this.doc.is_return && this.doc.docstatus === 1, visible_btns: ['Print Receipt', 'Email Receipt']}
 		];
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index be845d9..cda1069 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -672,13 +672,14 @@
 		if not records: return
 		document = _("Stock Reconciliation") if len(records) == 1 else _("Stock Reconciliations")
 
-		msg = _("The items {0} and {1} are present in the following {2} : <br>"
-			.format(frappe.bold(old_name), frappe.bold(new_name), document))
+		msg = _("The items {0} and {1} are present in the following {2} : ").format(
+			frappe.bold(old_name), frappe.bold(new_name), document)
 
+		msg += '<br>'
 		msg += ', '.join([get_link_to_form("Stock Reconciliation", d.parent) for d in records]) + "<br><br>"
 
-		msg += _("Note: To merge the items, create a separate Stock Reconciliation for the old item {0}"
-			.format(frappe.bold(old_name)))
+		msg += _("Note: To merge the items, create a separate Stock Reconciliation for the old item {0}").format(
+			frappe.bold(old_name))
 
 		frappe.throw(_(msg), title=_("Merge not allowed"))
 
@@ -971,7 +972,7 @@
 							frappe.throw(_("As there are existing transactions against item {0}, you can not change the value of {1}").format(self.name, frappe.bold(self.meta.get_label(field))))
 
 	def check_if_linked_document_exists(self, field):
-		linked_doctypes = ["Delivery Note Item", "Sales Invoice Item", "Purchase Receipt Item",
+		linked_doctypes = ["Delivery Note Item", "Sales Invoice Item", "POS Invoice Item", "Purchase Receipt Item",
 			"Purchase Invoice Item", "Stock Entry Detail", "Stock Reconciliation Item"]
 
 		# For "Is Stock Item", following doctypes is important
diff --git a/erpnext/stock/get_item_details.py b/erpnext/stock/get_item_details.py
index dfe8fea..873cfec 100644
--- a/erpnext/stock/get_item_details.py
+++ b/erpnext/stock/get_item_details.py
@@ -19,7 +19,7 @@
 
 from six import string_types, iteritems
 
-sales_doctypes = ['Quotation', 'Sales Order', 'Delivery Note', 'Sales Invoice']
+sales_doctypes = ['Quotation', 'Sales Order', 'Delivery Note', 'Sales Invoice', 'POS Invoice']
 purchase_doctypes = ['Material Request', 'Supplier Quotation', 'Purchase Order', 'Purchase Receipt', 'Purchase Invoice']
 
 @frappe.whitelist()