refactor: Exchange rate revaluation to handle accounts with zero account balance (#33165)

* refactor: new type for JE - Exchange Gain or Loss

* refactor: skip few validations for Exchanage Gain Or Loss type Jour

* refactor: ERR create 2 journals for handling zero and non-zero compa

1. Additional check box accounts table to identify accounts with zero balance
2. Accounts with zero balance only in either of the 2 currencies will be handled on separate Journal

* refactor: skips few validation for allowing 0 debit/credit

* fix: General Ledger presentaion currency

* test: fix test case in general ledger

* test: fix failing test case in AR report
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.js b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.js
index 926a442..f72ecc9 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.js
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.js
@@ -26,7 +26,7 @@
 				doc: frm.doc,
 				callback: function(r) {
 					if (r.message) {
-						frm.add_custom_button(__('Journal Entry'), function() {
+						frm.add_custom_button(__('Journal Entries'), function() {
 							return frm.events.make_jv(frm);
 						}, __('Create'));
 					}
@@ -35,10 +35,11 @@
 		}
 	},
 
-	get_entries: function(frm) {
+	get_entries: function(frm, account) {
 		frappe.call({
 			method: "get_accounts_data",
 			doc: cur_frm.doc,
+			account: account,
 			callback: function(r){
 				frappe.model.clear_table(frm.doc, "accounts");
 				if(r.message) {
@@ -57,7 +58,6 @@
 
 		let total_gain_loss = 0;
 		frm.doc.accounts.forEach((d) => {
-			d.gain_loss = flt(d.new_balance_in_base_currency, precision("new_balance_in_base_currency", d)) - flt(d.balance_in_base_currency, precision("balance_in_base_currency", d));
 			total_gain_loss += flt(d.gain_loss, precision("gain_loss", d));
 		});
 
@@ -66,13 +66,19 @@
 	},
 
 	make_jv : function(frm) {
+		let revaluation_journal = null;
+		let zero_balance_journal = null;
 		frappe.call({
-			method: "make_jv_entry",
+			method: "make_jv_entries",
 			doc: frm.doc,
+			freeze: true,
+			freeze_message: "Making Journal Entries...",
 			callback: function(r){
 				if (r.message) {
-					var doc = frappe.model.sync(r.message)[0];
-					frappe.set_route("Form", doc.doctype, doc.name);
+					let response = r.message;
+					if(response['revaluation_jv'] || response['zero_balance_jv']) {
+						frappe.msgprint(__("Journals have been created"));
+					}
 				}
 			}
 		});
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.json b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.json
index e00b17e..0d198ca 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.json
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.json
@@ -14,6 +14,9 @@
   "get_entries",
   "accounts",
   "section_break_6",
+  "gain_loss_unbooked",
+  "gain_loss_booked",
+  "column_break_10",
   "total_gain_loss",
   "amended_from"
  ],
@@ -60,13 +63,6 @@
    "fieldtype": "Section Break"
   },
   {
-   "fieldname": "total_gain_loss",
-   "fieldtype": "Currency",
-   "label": "Total Gain/Loss",
-   "options": "Company:company:default_currency",
-   "read_only": 1
-  },
-  {
    "fieldname": "amended_from",
    "fieldtype": "Link",
    "label": "Amended From",
@@ -74,11 +70,37 @@
    "options": "Exchange Rate Revaluation",
    "print_hide": 1,
    "read_only": 1
+  },
+  {
+   "fieldname": "gain_loss_unbooked",
+   "fieldtype": "Currency",
+   "label": "Gain/Loss from Revaluation",
+   "options": "Company:company:default_currency",
+   "read_only": 1
+  },
+  {
+   "description": "Gain/Loss accumulated in foreign currency account. Accounts with '0' balance in either Base or Account currency",
+   "fieldname": "gain_loss_booked",
+   "fieldtype": "Currency",
+   "label": "Gain/Loss already booked",
+   "options": "Company:company:default_currency",
+   "read_only": 1
+  },
+  {
+   "fieldname": "total_gain_loss",
+   "fieldtype": "Currency",
+   "label": "Total Gain/Loss",
+   "options": "Company:company:default_currency",
+   "read_only": 1
+  },
+  {
+   "fieldname": "column_break_10",
+   "fieldtype": "Column Break"
   }
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2022-11-17 10:28:03.911554",
+ "modified": "2022-12-29 19:38:24.416529",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Exchange Rate Revaluation",
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
index 68e828b..d67d59b 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation/exchange_rate_revaluation.py
@@ -3,10 +3,12 @@
 
 
 import frappe
-from frappe import _
+from frappe import _, qb
 from frappe.model.document import Document
 from frappe.model.meta import get_field_precision
-from frappe.utils import flt
+from frappe.query_builder import Criterion, Order
+from frappe.query_builder.functions import NullIf, Sum
+from frappe.utils import flt, get_link_to_form
 
 import erpnext
 from erpnext.accounts.doctype.journal_entry.journal_entry import get_balance_on
@@ -19,11 +21,25 @@
 
 	def set_total_gain_loss(self):
 		total_gain_loss = 0
+
+		gain_loss_booked = 0
+		gain_loss_unbooked = 0
+
 		for d in self.accounts:
-			d.gain_loss = flt(
-				d.new_balance_in_base_currency, d.precision("new_balance_in_base_currency")
-			) - flt(d.balance_in_base_currency, d.precision("balance_in_base_currency"))
+			if not d.zero_balance:
+				d.gain_loss = flt(
+					d.new_balance_in_base_currency, d.precision("new_balance_in_base_currency")
+				) - flt(d.balance_in_base_currency, d.precision("balance_in_base_currency"))
+
+			if d.zero_balance:
+				gain_loss_booked += flt(d.gain_loss, d.precision("gain_loss"))
+			else:
+				gain_loss_unbooked += flt(d.gain_loss, d.precision("gain_loss"))
+
 			total_gain_loss += flt(d.gain_loss, d.precision("gain_loss"))
+
+		self.gain_loss_booked = gain_loss_booked
+		self.gain_loss_unbooked = gain_loss_unbooked
 		self.total_gain_loss = flt(total_gain_loss, self.precision("total_gain_loss"))
 
 	def validate_mandatory(self):
@@ -35,98 +51,206 @@
 
 	@frappe.whitelist()
 	def check_journal_entry_condition(self):
-		total_debit = frappe.db.get_value(
-			"Journal Entry Account",
-			{"reference_type": "Exchange Rate Revaluation", "reference_name": self.name, "docstatus": 1},
-			"sum(debit) as sum",
+		exchange_gain_loss_account = self.get_for_unrealized_gain_loss_account()
+
+		jea = qb.DocType("Journal Entry Account")
+		journals = (
+			qb.from_(jea)
+			.select(jea.parent)
+			.distinct()
+			.where(
+				(jea.reference_type == "Exchange Rate Revaluation")
+				& (jea.reference_name == self.name)
+				& (jea.docstatus == 1)
+			)
+			.run()
 		)
 
-		total_amt = 0
-		for d in self.accounts:
-			total_amt = total_amt + d.new_balance_in_base_currency
+		if journals:
+			gle = qb.DocType("GL Entry")
+			total_amt = (
+				qb.from_(gle)
+				.select((Sum(gle.credit) - Sum(gle.debit)).as_("total_amount"))
+				.where(
+					(gle.voucher_type == "Journal Entry")
+					& (gle.voucher_no.isin(journals))
+					& (gle.account == exchange_gain_loss_account)
+					& (gle.is_cancelled == 0)
+				)
+				.run()
+			)
 
-		if total_amt != total_debit:
-			return True
+			if total_amt and total_amt[0][0] != self.total_gain_loss:
+				return True
+			else:
+				return False
 
-		return False
+		return True
 
 	@frappe.whitelist()
-	def get_accounts_data(self, account=None):
-		accounts = []
+	def get_accounts_data(self):
 		self.validate_mandatory()
-		company_currency = erpnext.get_company_currency(self.company)
+		account_details = self.get_account_balance_from_gle(
+			company=self.company, posting_date=self.posting_date, account=None, party_type=None, party=None
+		)
+		accounts_with_new_balance = self.calculate_new_account_balance(
+			self.company, self.posting_date, account_details
+		)
+
+		if not accounts_with_new_balance:
+			self.throw_invalid_response_message(account_details)
+
+		return accounts_with_new_balance
+
+	@staticmethod
+	def get_account_balance_from_gle(company, posting_date, account, party_type, party):
+		account_details = []
+
+		if company and posting_date:
+			company_currency = erpnext.get_company_currency(company)
+
+			acc = qb.DocType("Account")
+			if account:
+				accounts = [account]
+			else:
+				res = (
+					qb.from_(acc)
+					.select(acc.name)
+					.where(
+						(acc.is_group == 0)
+						& (acc.report_type == "Balance Sheet")
+						& (acc.root_type.isin(["Asset", "Liability", "Equity"]))
+						& (acc.account_type != "Stock")
+						& (acc.company == company)
+						& (acc.account_currency != company_currency)
+					)
+					.orderby(acc.name)
+					.run(as_list=True)
+				)
+				accounts = [x[0] for x in res]
+
+			if accounts:
+				having_clause = (qb.Field("balance") != qb.Field("balance_in_account_currency")) & (
+					(qb.Field("balance_in_account_currency") != 0) | (qb.Field("balance") != 0)
+				)
+
+				gle = qb.DocType("GL Entry")
+
+				# conditions
+				conditions = []
+				conditions.append(gle.account.isin(accounts))
+				conditions.append(gle.posting_date.lte(posting_date))
+				conditions.append(gle.is_cancelled == 0)
+
+				if party_type:
+					conditions.append(gle.party_type == party_type)
+				if party:
+					conditions.append(gle.party == party)
+
+				account_details = (
+					qb.from_(gle)
+					.select(
+						gle.account,
+						gle.party_type,
+						gle.party,
+						gle.account_currency,
+						(Sum(gle.debit_in_account_currency) - Sum(gle.credit_in_account_currency)).as_(
+							"balance_in_account_currency"
+						),
+						(Sum(gle.debit) - Sum(gle.credit)).as_("balance"),
+						(Sum(gle.debit) - Sum(gle.credit) == 0)
+						^ (Sum(gle.debit_in_account_currency) - Sum(gle.credit_in_account_currency) == 0).as_(
+							"zero_balance"
+						),
+					)
+					.where(Criterion.all(conditions))
+					.groupby(gle.account, NullIf(gle.party_type, ""), NullIf(gle.party, ""))
+					.having(having_clause)
+					.orderby(gle.account)
+					.run(as_dict=True)
+				)
+
+		return account_details
+
+	@staticmethod
+	def calculate_new_account_balance(company, posting_date, account_details):
+		accounts = []
+		company_currency = erpnext.get_company_currency(company)
 		precision = get_field_precision(
 			frappe.get_meta("Exchange Rate Revaluation Account").get_field("new_balance_in_base_currency"),
 			company_currency,
 		)
 
-		account_details = self.get_accounts_from_gle()
-		for d in account_details:
-			current_exchange_rate = (
-				d.balance / d.balance_in_account_currency if d.balance_in_account_currency else 0
-			)
-			new_exchange_rate = get_exchange_rate(d.account_currency, company_currency, self.posting_date)
-			new_balance_in_base_currency = flt(d.balance_in_account_currency * new_exchange_rate)
-			gain_loss = flt(new_balance_in_base_currency, precision) - flt(d.balance, precision)
-			if gain_loss:
-				accounts.append(
-					{
-						"account": d.account,
-						"party_type": d.party_type,
-						"party": d.party,
-						"account_currency": d.account_currency,
-						"balance_in_base_currency": d.balance,
-						"balance_in_account_currency": d.balance_in_account_currency,
-						"current_exchange_rate": current_exchange_rate,
-						"new_exchange_rate": new_exchange_rate,
-						"new_balance_in_base_currency": new_balance_in_base_currency,
-					}
+		if account_details:
+			# Handle Accounts with balance in both Account/Base Currency
+			for d in [x for x in account_details if not x.zero_balance]:
+				current_exchange_rate = (
+					d.balance / d.balance_in_account_currency if d.balance_in_account_currency else 0
 				)
+				new_exchange_rate = get_exchange_rate(d.account_currency, company_currency, posting_date)
+				new_balance_in_base_currency = flt(d.balance_in_account_currency * new_exchange_rate)
+				gain_loss = flt(new_balance_in_base_currency, precision) - flt(d.balance, precision)
+				if gain_loss:
+					accounts.append(
+						{
+							"account": d.account,
+							"party_type": d.party_type,
+							"party": d.party,
+							"account_currency": d.account_currency,
+							"balance_in_base_currency": d.balance,
+							"balance_in_account_currency": d.balance_in_account_currency,
+							"zero_balance": d.zero_balance,
+							"current_exchange_rate": current_exchange_rate,
+							"new_exchange_rate": new_exchange_rate,
+							"new_balance_in_base_currency": new_balance_in_base_currency,
+							"new_balance_in_account_currency": d.balance_in_account_currency,
+							"gain_loss": gain_loss,
+						}
+					)
 
-		if not accounts:
-			self.throw_invalid_response_message(account_details)
+			# Handle Accounts with '0' balance in Account/Base Currency
+			for d in [x for x in account_details if x.zero_balance]:
+
+				# TODO: Set new balance in Base/Account currency
+				if d.balance > 0:
+					current_exchange_rate = new_exchange_rate = 0
+
+					new_balance_in_account_currency = 0  # this will be '0'
+					new_balance_in_base_currency = 0  # this will be '0'
+					gain_loss = flt(new_balance_in_base_currency, precision) - flt(d.balance, precision)
+				else:
+					new_exchange_rate = 0
+					new_balance_in_base_currency = 0
+					new_balance_in_account_currency = 0
+
+					current_exchange_rate = calculate_exchange_rate_using_last_gle(
+						company, d.account, d.party_type, d.party
+					)
+
+					gain_loss = new_balance_in_account_currency - (
+						current_exchange_rate * d.balance_in_account_currency
+					)
+
+				if gain_loss:
+					accounts.append(
+						{
+							"account": d.account,
+							"party_type": d.party_type,
+							"party": d.party,
+							"account_currency": d.account_currency,
+							"balance_in_base_currency": d.balance,
+							"balance_in_account_currency": d.balance_in_account_currency,
+							"zero_balance": d.zero_balance,
+							"current_exchange_rate": current_exchange_rate,
+							"new_exchange_rate": new_exchange_rate,
+							"new_balance_in_base_currency": new_balance_in_base_currency,
+							"new_balance_in_account_currency": new_balance_in_account_currency,
+							"gain_loss": gain_loss,
+						}
+					)
 
 		return accounts
 
-	def get_accounts_from_gle(self):
-		company_currency = erpnext.get_company_currency(self.company)
-		accounts = frappe.db.sql_list(
-			"""
-			select name
-			from tabAccount
-			where is_group = 0
-				and report_type = 'Balance Sheet'
-				and root_type in ('Asset', 'Liability', 'Equity')
-				and account_type != 'Stock'
-				and company=%s
-				and account_currency != %s
-			order by name""",
-			(self.company, company_currency),
-		)
-
-		account_details = []
-		if accounts:
-			account_details = frappe.db.sql(
-				"""
-				select
-					account, party_type, party, account_currency,
-					sum(debit_in_account_currency) - sum(credit_in_account_currency) as balance_in_account_currency,
-					sum(debit) - sum(credit) as balance
-				from `tabGL Entry`
-				where account in (%s)
-				and posting_date <= %s
-				and is_cancelled = 0
-				group by account, NULLIF(party_type,''), NULLIF(party,'')
-				having sum(debit) != sum(credit)
-				order by account
-			"""
-				% (", ".join(["%s"] * len(accounts)), "%s"),
-				tuple(accounts + [self.posting_date]),
-				as_dict=1,
-			)
-
-		return account_details
-
 	def throw_invalid_response_message(self, account_details):
 		if account_details:
 			message = _("No outstanding invoices require exchange rate revaluation")
@@ -134,11 +258,7 @@
 			message = _("No outstanding invoices found")
 		frappe.msgprint(message)
 
-	@frappe.whitelist()
-	def make_jv_entry(self):
-		if self.total_gain_loss == 0:
-			return
-
+	def get_for_unrealized_gain_loss_account(self):
 		unrealized_exchange_gain_loss_account = frappe.get_cached_value(
 			"Company", self.company, "unrealized_exchange_gain_loss_account"
 		)
@@ -146,6 +266,130 @@
 			frappe.throw(
 				_("Please set Unrealized Exchange Gain/Loss Account in Company {0}").format(self.company)
 			)
+		return unrealized_exchange_gain_loss_account
+
+	@frappe.whitelist()
+	def make_jv_entries(self):
+		zero_balance_jv = self.make_jv_for_zero_balance()
+		if zero_balance_jv:
+			frappe.msgprint(
+				f"Zero Balance Journal: {get_link_to_form('Journal Entry', zero_balance_jv.name)}"
+			)
+
+		revaluation_jv = self.make_jv_for_revaluation()
+		if revaluation_jv:
+			frappe.msgprint(
+				f"Revaluation Journal: {get_link_to_form('Journal Entry', revaluation_jv.name)}"
+			)
+
+		return {
+			"revaluation_jv": revaluation_jv.name if revaluation_jv else None,
+			"zero_balance_jv": zero_balance_jv.name if zero_balance_jv else None,
+		}
+
+	def make_jv_for_zero_balance(self):
+		if self.gain_loss_booked == 0:
+			return
+
+		accounts = [x for x in self.accounts if x.zero_balance]
+
+		if not accounts:
+			return
+
+		unrealized_exchange_gain_loss_account = self.get_for_unrealized_gain_loss_account()
+
+		journal_entry = frappe.new_doc("Journal Entry")
+		journal_entry.voucher_type = "Exchange Gain Or Loss"
+		journal_entry.company = self.company
+		journal_entry.posting_date = self.posting_date
+		journal_entry.multi_currency = 1
+
+		journal_entry_accounts = []
+		for d in accounts:
+			journal_account = frappe._dict(
+				{
+					"account": d.get("account"),
+					"party_type": d.get("party_type"),
+					"party": d.get("party"),
+					"account_currency": d.get("account_currency"),
+					"balance": flt(
+						d.get("balance_in_account_currency"), d.precision("balance_in_account_currency")
+					),
+					"exchange_rate": 0,
+					"cost_center": erpnext.get_default_cost_center(self.company),
+					"reference_type": "Exchange Rate Revaluation",
+					"reference_name": self.name,
+				}
+			)
+
+			# Account Currency has balance
+			if d.get("balance_in_account_currency") and not d.get("new_balance_in_account_currency"):
+				dr_or_cr = (
+					"credit_in_account_currency"
+					if d.get("balance_in_account_currency") > 0
+					else "debit_in_account_currency"
+				)
+				reverse_dr_or_cr = (
+					"debit_in_account_currency"
+					if dr_or_cr == "credit_in_account_currency"
+					else "credit_in_account_currency"
+				)
+				journal_account.update(
+					{
+						dr_or_cr: flt(
+							abs(d.get("balance_in_account_currency")), d.precision("balance_in_account_currency")
+						),
+						reverse_dr_or_cr: 0,
+						"debit": 0,
+						"credit": 0,
+					}
+				)
+			elif d.get("balance_in_base_currency") and not d.get("new_balance_in_base_currency"):
+				# Base currency has balance
+				dr_or_cr = "credit" if d.get("balance_in_base_currency") > 0 else "debit"
+				reverse_dr_or_cr = "debit" if dr_or_cr == "credit" else "credit"
+				journal_account.update(
+					{
+						dr_or_cr: flt(
+							abs(d.get("balance_in_base_currency")), d.precision("balance_in_base_currency")
+						),
+						reverse_dr_or_cr: 0,
+						"debit_in_account_currency": 0,
+						"credit_in_account_currency": 0,
+					}
+				)
+
+			journal_entry_accounts.append(journal_account)
+
+		journal_entry_accounts.append(
+			{
+				"account": unrealized_exchange_gain_loss_account,
+				"balance": get_balance_on(unrealized_exchange_gain_loss_account),
+				"debit": abs(self.gain_loss_booked) if self.gain_loss_booked < 0 else 0,
+				"credit": abs(self.gain_loss_booked) if self.gain_loss_booked > 0 else 0,
+				"debit_in_account_currency": abs(self.gain_loss_booked) if self.gain_loss_booked < 0 else 0,
+				"credit_in_account_currency": self.gain_loss_booked if self.gain_loss_booked > 0 else 0,
+				"cost_center": erpnext.get_default_cost_center(self.company),
+				"exchange_rate": 1,
+				"reference_type": "Exchange Rate Revaluation",
+				"reference_name": self.name,
+			}
+		)
+
+		journal_entry.set("accounts", journal_entry_accounts)
+		journal_entry.set_total_debit_credit()
+		journal_entry.save()
+		return journal_entry
+
+	def make_jv_for_revaluation(self):
+		if self.gain_loss_unbooked == 0:
+			return
+
+		accounts = [x for x in self.accounts if not x.zero_balance]
+		if not accounts:
+			return
+
+		unrealized_exchange_gain_loss_account = self.get_for_unrealized_gain_loss_account()
 
 		journal_entry = frappe.new_doc("Journal Entry")
 		journal_entry.voucher_type = "Exchange Rate Revaluation"
@@ -154,7 +398,7 @@
 		journal_entry.multi_currency = 1
 
 		journal_entry_accounts = []
-		for d in self.accounts:
+		for d in accounts:
 			dr_or_cr = (
 				"debit_in_account_currency"
 				if d.get("balance_in_account_currency") > 0
@@ -179,6 +423,7 @@
 					dr_or_cr: flt(
 						abs(d.get("balance_in_account_currency")), d.precision("balance_in_account_currency")
 					),
+					"cost_center": erpnext.get_default_cost_center(self.company),
 					"exchange_rate": flt(d.get("new_exchange_rate"), d.precision("new_exchange_rate")),
 					"reference_type": "Exchange Rate Revaluation",
 					"reference_name": self.name,
@@ -196,6 +441,7 @@
 					reverse_dr_or_cr: flt(
 						abs(d.get("balance_in_account_currency")), d.precision("balance_in_account_currency")
 					),
+					"cost_center": erpnext.get_default_cost_center(self.company),
 					"exchange_rate": flt(d.get("current_exchange_rate"), d.precision("current_exchange_rate")),
 					"reference_type": "Exchange Rate Revaluation",
 					"reference_name": self.name,
@@ -206,8 +452,11 @@
 			{
 				"account": unrealized_exchange_gain_loss_account,
 				"balance": get_balance_on(unrealized_exchange_gain_loss_account),
-				"debit_in_account_currency": abs(self.total_gain_loss) if self.total_gain_loss < 0 else 0,
-				"credit_in_account_currency": self.total_gain_loss if self.total_gain_loss > 0 else 0,
+				"debit_in_account_currency": abs(self.gain_loss_unbooked)
+				if self.gain_loss_unbooked < 0
+				else 0,
+				"credit_in_account_currency": self.gain_loss_unbooked if self.gain_loss_unbooked > 0 else 0,
+				"cost_center": erpnext.get_default_cost_center(self.company),
 				"exchange_rate": 1,
 				"reference_type": "Exchange Rate Revaluation",
 				"reference_name": self.name,
@@ -217,42 +466,90 @@
 		journal_entry.set("accounts", journal_entry_accounts)
 		journal_entry.set_amounts_in_company_currency()
 		journal_entry.set_total_debit_credit()
-		return journal_entry.as_dict()
+		journal_entry.save()
+		return journal_entry
+
+
+def calculate_exchange_rate_using_last_gle(company, account, party_type, party):
+	"""
+	Use last GL entry to calculate exchange rate
+	"""
+	last_exchange_rate = None
+	if company and account:
+		gl = qb.DocType("GL Entry")
+
+		# build conditions
+		conditions = []
+		conditions.append(gl.company == company)
+		conditions.append(gl.account == account)
+		conditions.append(gl.is_cancelled == 0)
+		if party_type:
+			conditions.append(gl.party_type == party_type)
+		if party:
+			conditions.append(gl.party == party)
+
+		voucher_type, voucher_no = (
+			qb.from_(gl)
+			.select(gl.voucher_type, gl.voucher_no)
+			.where(Criterion.all(conditions))
+			.orderby(gl.posting_date, order=Order.desc)
+			.limit(1)
+			.run()[0]
+		)
+
+		last_exchange_rate = (
+			qb.from_(gl)
+			.select((gl.debit - gl.credit) / (gl.debit_in_account_currency - gl.credit_in_account_currency))
+			.where(
+				(gl.voucher_type == voucher_type) & (gl.voucher_no == voucher_no) & (gl.account == account)
+			)
+			.orderby(gl.posting_date, order=Order.desc)
+			.limit(1)
+			.run()[0][0]
+		)
+
+	return last_exchange_rate
 
 
 @frappe.whitelist()
-def get_account_details(account, company, posting_date, party_type=None, party=None):
+def get_account_details(company, posting_date, account, party_type=None, party=None):
+	if not (company and posting_date):
+		frappe.throw(_("Company and Posting Date is mandatory"))
+
 	account_currency, account_type = frappe.get_cached_value(
 		"Account", account, ["account_currency", "account_type"]
 	)
+
 	if account_type in ["Receivable", "Payable"] and not (party_type and party):
 		frappe.throw(_("Party Type and Party is mandatory for {0} account").format(account_type))
 
 	account_details = {}
 	company_currency = erpnext.get_company_currency(company)
-	balance = get_balance_on(
-		account, date=posting_date, party_type=party_type, party=party, in_account_currency=False
-	)
+
 	account_details = {
 		"account_currency": account_currency,
 	}
+	account_balance = ExchangeRateRevaluation.get_account_balance_from_gle(
+		company=company, posting_date=posting_date, account=account, party_type=party_type, party=party
+	)
 
-	if balance:
-		balance_in_account_currency = get_balance_on(
-			account, date=posting_date, party_type=party_type, party=party
+	if account_balance and (
+		account_balance[0].balance or account_balance[0].balance_in_account_currency
+	):
+		account_with_new_balance = ExchangeRateRevaluation.calculate_new_account_balance(
+			company, posting_date, account_balance
 		)
-		current_exchange_rate = (
-			balance / balance_in_account_currency if balance_in_account_currency else 0
-		)
-		new_exchange_rate = get_exchange_rate(account_currency, company_currency, posting_date)
-		new_balance_in_base_currency = balance_in_account_currency * new_exchange_rate
-		account_details = account_details.update(
+		row = account_with_new_balance[0]
+		account_details.update(
 			{
-				"balance_in_base_currency": balance,
-				"balance_in_account_currency": balance_in_account_currency,
-				"current_exchange_rate": current_exchange_rate,
-				"new_exchange_rate": new_exchange_rate,
-				"new_balance_in_base_currency": new_balance_in_base_currency,
+				"balance_in_base_currency": row["balance_in_base_currency"],
+				"balance_in_account_currency": row["balance_in_account_currency"],
+				"current_exchange_rate": row["current_exchange_rate"],
+				"new_exchange_rate": row["new_exchange_rate"],
+				"new_balance_in_base_currency": row["new_balance_in_base_currency"],
+				"new_balance_in_account_currency": row["new_balance_in_account_currency"],
+				"zero_balance": row["zero_balance"],
+				"gain_loss": row["gain_loss"],
 			}
 		)
 
diff --git a/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.json b/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.json
index 80e972b..2968359 100644
--- a/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.json
+++ b/erpnext/accounts/doctype/exchange_rate_revaluation_account/exchange_rate_revaluation_account.json
@@ -10,14 +10,21 @@
   "party",
   "column_break_2",
   "account_currency",
+  "account_balances",
   "balance_in_account_currency",
+  "column_break_46yz",
+  "new_balance_in_account_currency",
   "balances",
   "current_exchange_rate",
-  "balance_in_base_currency",
-  "column_break_9",
+  "column_break_xown",
   "new_exchange_rate",
+  "column_break_9",
+  "balance_in_base_currency",
+  "column_break_ukce",
   "new_balance_in_base_currency",
-  "gain_loss"
+  "section_break_ngrs",
+  "gain_loss",
+  "zero_balance"
  ],
  "fields": [
   {
@@ -78,7 +85,7 @@
   },
   {
    "fieldname": "column_break_9",
-   "fieldtype": "Column Break"
+   "fieldtype": "Section Break"
   },
   {
    "fieldname": "new_exchange_rate",
@@ -102,11 +109,45 @@
    "label": "Gain/Loss",
    "options": "Company:company:default_currency",
    "read_only": 1
+  },
+  {
+   "default": "0",
+   "description": "This Account has '0' balance in either Base Currency or Account Currency",
+   "fieldname": "zero_balance",
+   "fieldtype": "Check",
+   "label": "Zero Balance"
+  },
+  {
+   "fieldname": "new_balance_in_account_currency",
+   "fieldtype": "Currency",
+   "label": "New Balance In Account Currency",
+   "options": "account_currency",
+   "read_only": 1
+  },
+  {
+   "fieldname": "account_balances",
+   "fieldtype": "Section Break"
+  },
+  {
+   "fieldname": "column_break_46yz",
+   "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "column_break_xown",
+   "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "column_break_ukce",
+   "fieldtype": "Column Break"
+  },
+  {
+   "fieldname": "section_break_ngrs",
+   "fieldtype": "Section Break"
   }
  ],
  "istable": 1,
  "links": [],
- "modified": "2022-11-17 10:26:18.302728",
+ "modified": "2022-12-29 19:38:52.915295",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Exchange Rate Revaluation Account",
diff --git a/erpnext/accounts/doctype/gl_entry/gl_entry.py b/erpnext/accounts/doctype/gl_entry/gl_entry.py
index f312048..f07a4fa 100644
--- a/erpnext/accounts/doctype/gl_entry/gl_entry.py
+++ b/erpnext/accounts/doctype/gl_entry/gl_entry.py
@@ -95,7 +95,15 @@
 				)
 
 		# Zero value transaction is not allowed
-		if not (flt(self.debit, self.precision("debit")) or flt(self.credit, self.precision("credit"))):
+		if not (
+			flt(self.debit, self.precision("debit"))
+			or flt(self.credit, self.precision("credit"))
+			or (
+				self.voucher_type == "Journal Entry"
+				and frappe.get_cached_value("Journal Entry", self.voucher_no, "voucher_type")
+				== "Exchange Gain Or Loss"
+			)
+		):
 			frappe.throw(
 				_("{0} {1}: Either debit or credit amount is required for {2}").format(
 					self.voucher_type, self.voucher_no, self.account
diff --git a/erpnext/accounts/doctype/journal_entry/journal_entry.json b/erpnext/accounts/doctype/journal_entry/journal_entry.json
index 8e5ba37..3f69d5c 100644
--- a/erpnext/accounts/doctype/journal_entry/journal_entry.json
+++ b/erpnext/accounts/doctype/journal_entry/journal_entry.json
@@ -88,7 +88,7 @@
    "label": "Entry Type",
    "oldfieldname": "voucher_type",
    "oldfieldtype": "Select",
-   "options": "Journal Entry\nInter Company Journal Entry\nBank Entry\nCash Entry\nCredit Card Entry\nDebit Note\nCredit Note\nContra Entry\nExcise Entry\nWrite Off Entry\nOpening Entry\nDepreciation Entry\nExchange Rate Revaluation\nDeferred Revenue\nDeferred Expense",
+   "options": "Journal Entry\nInter Company Journal Entry\nBank Entry\nCash Entry\nCredit Card Entry\nDebit Note\nCredit Note\nContra Entry\nExcise Entry\nWrite Off Entry\nOpening Entry\nDepreciation Entry\nExchange Rate Revaluation\nExchange Gain Or Loss\nDeferred Revenue\nDeferred Expense",
    "reqd": 1,
    "search_index": 1
   },
@@ -539,7 +539,7 @@
  "idx": 176,
  "is_submittable": 1,
  "links": [],
- "modified": "2022-06-23 22:01:32.348337",
+ "modified": "2022-11-28 17:40:01.241908",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Journal Entry",
diff --git a/erpnext/accounts/doctype/journal_entry/journal_entry.py b/erpnext/accounts/doctype/journal_entry/journal_entry.py
index b63d57c..40a4803 100644
--- a/erpnext/accounts/doctype/journal_entry/journal_entry.py
+++ b/erpnext/accounts/doctype/journal_entry/journal_entry.py
@@ -601,16 +601,18 @@
 					d.against_account = ", ".join(list(set(accounts_debited)))
 
 	def validate_debit_credit_amount(self):
-		for d in self.get("accounts"):
-			if not flt(d.debit) and not flt(d.credit):
-				frappe.throw(_("Row {0}: Both Debit and Credit values cannot be zero").format(d.idx))
+		if not (self.voucher_type == "Exchange Gain Or Loss" and self.multi_currency):
+			for d in self.get("accounts"):
+				if not flt(d.debit) and not flt(d.credit):
+					frappe.throw(_("Row {0}: Both Debit and Credit values cannot be zero").format(d.idx))
 
 	def validate_total_debit_and_credit(self):
 		self.set_total_debit_credit()
-		if self.difference:
-			frappe.throw(
-				_("Total Debit must be equal to Total Credit. The difference is {0}").format(self.difference)
-			)
+		if not (self.voucher_type == "Exchange Gain Or Loss" and self.multi_currency):
+			if self.difference:
+				frappe.throw(
+					_("Total Debit must be equal to Total Credit. The difference is {0}").format(self.difference)
+				)
 
 	def set_total_debit_credit(self):
 		self.total_debit, self.total_credit, self.difference = 0, 0, 0
@@ -648,16 +650,17 @@
 		self.set_exchange_rate()
 
 	def set_amounts_in_company_currency(self):
-		for d in self.get("accounts"):
-			d.debit_in_account_currency = flt(
-				d.debit_in_account_currency, d.precision("debit_in_account_currency")
-			)
-			d.credit_in_account_currency = flt(
-				d.credit_in_account_currency, d.precision("credit_in_account_currency")
-			)
+		if not (self.voucher_type == "Exchange Gain Or Loss" and self.multi_currency):
+			for d in self.get("accounts"):
+				d.debit_in_account_currency = flt(
+					d.debit_in_account_currency, d.precision("debit_in_account_currency")
+				)
+				d.credit_in_account_currency = flt(
+					d.credit_in_account_currency, d.precision("credit_in_account_currency")
+				)
 
-			d.debit = flt(d.debit_in_account_currency * flt(d.exchange_rate), d.precision("debit"))
-			d.credit = flt(d.credit_in_account_currency * flt(d.exchange_rate), d.precision("credit"))
+				d.debit = flt(d.debit_in_account_currency * flt(d.exchange_rate), d.precision("debit"))
+				d.credit = flt(d.credit_in_account_currency * flt(d.exchange_rate), d.precision("credit"))
 
 	def set_exchange_rate(self):
 		for d in self.get("accounts"):
@@ -786,7 +789,7 @@
 	def build_gl_map(self):
 		gl_map = []
 		for d in self.get("accounts"):
-			if d.debit or d.credit:
+			if d.debit or d.credit or (self.voucher_type == "Exchange Gain Or Loss"):
 				r = [d.user_remark, self.remark]
 				r = [x for x in r if x]
 				remarks = "\n".join(r)
diff --git a/erpnext/accounts/general_ledger.py b/erpnext/accounts/general_ledger.py
index c757057..41fdb6a 100644
--- a/erpnext/accounts/general_ledger.py
+++ b/erpnext/accounts/general_ledger.py
@@ -199,7 +199,14 @@
 
 	# filter zero debit and credit entries
 	merged_gl_map = filter(
-		lambda x: flt(x.debit, precision) != 0 or flt(x.credit, precision) != 0, merged_gl_map
+		lambda x: flt(x.debit, precision) != 0
+		or flt(x.credit, precision) != 0
+		or (
+			x.voucher_type == "Journal Entry"
+			and frappe.get_cached_value("Journal Entry", x.voucher_no, "voucher_type")
+			== "Exchange Gain Or Loss"
+		),
+		merged_gl_map,
 	)
 	merged_gl_map = list(merged_gl_map)
 
@@ -350,15 +357,26 @@
 	allowance = get_debit_credit_allowance(voucher_type, precision)
 
 	debit_credit_diff = get_debit_credit_difference(gl_map, precision)
+
 	if abs(debit_credit_diff) > allowance:
-		raise_debit_credit_not_equal_error(debit_credit_diff, voucher_type, voucher_no)
+		if not (
+			voucher_type == "Journal Entry"
+			and frappe.get_cached_value("Journal Entry", voucher_no, "voucher_type")
+			== "Exchange Gain Or Loss"
+		):
+			raise_debit_credit_not_equal_error(debit_credit_diff, voucher_type, voucher_no)
 
 	elif abs(debit_credit_diff) >= (1.0 / (10**precision)):
 		make_round_off_gle(gl_map, debit_credit_diff, precision)
 
 	debit_credit_diff = get_debit_credit_difference(gl_map, precision)
 	if abs(debit_credit_diff) > allowance:
-		raise_debit_credit_not_equal_error(debit_credit_diff, voucher_type, voucher_no)
+		if not (
+			voucher_type == "Journal Entry"
+			and frappe.get_cached_value("Journal Entry", voucher_no, "voucher_type")
+			== "Exchange Gain Or Loss"
+		):
+			raise_debit_credit_not_equal_error(debit_credit_diff, voucher_type, voucher_no)
 
 
 def get_debit_credit_difference(gl_map, precision):
diff --git a/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py b/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
index 97a9c15..afd02a0 100644
--- a/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
+++ b/erpnext/accounts/report/accounts_receivable/test_accounts_receivable.py
@@ -184,11 +184,9 @@
 		err = err.save().submit()
 
 		# Submit JV for ERR
-		jv = frappe.get_doc(err.make_jv_entry())
-		jv = jv.save()
-		for x in jv.accounts:
-			x.cost_center = get_default_cost_center(jv.company)
-		jv.submit()
+		err_journals = err.make_jv_entries()
+		je = frappe.get_doc("Journal Entry", err_journals.get("revaluation_jv"))
+		je = je.submit()
 
 		filters = {
 			"company": company,
@@ -201,7 +199,7 @@
 		report = execute(filters)
 
 		expected_data_for_err = [0, -5, 0, 5]
-		row = [x for x in report[1] if x.voucher_type == jv.doctype and x.voucher_no == jv.name][0]
+		row = [x for x in report[1] if x.voucher_type == je.doctype and x.voucher_no == je.name][0]
 		self.assertEqual(
 			expected_data_for_err,
 			[
diff --git a/erpnext/accounts/report/general_ledger/test_general_ledger.py b/erpnext/accounts/report/general_ledger/test_general_ledger.py
index b10e769..c563785 100644
--- a/erpnext/accounts/report/general_ledger/test_general_ledger.py
+++ b/erpnext/accounts/report/general_ledger/test_general_ledger.py
@@ -109,8 +109,7 @@
 		frappe.db.set_value(
 			"Company", company, "unrealized_exchange_gain_loss_account", "_Test Exchange Gain/Loss - _TC"
 		)
-		revaluation_jv = revaluation.make_jv_entry()
-		revaluation_jv = frappe.get_doc(revaluation_jv)
+		revaluation_jv = revaluation.make_jv_for_revaluation()
 		revaluation_jv.cost_center = "_Test Cost Center - _TC"
 		for acc in revaluation_jv.get("accounts"):
 			acc.cost_center = "_Test Cost Center - _TC"
diff --git a/erpnext/accounts/report/utils.py b/erpnext/accounts/report/utils.py
index d3cd290..97cc1c4 100644
--- a/erpnext/accounts/report/utils.py
+++ b/erpnext/accounts/report/utils.py
@@ -101,11 +101,8 @@
 		account_currency = entry["account_currency"]
 
 		if len(account_currencies) == 1 and account_currency == presentation_currency:
-			if debit_in_account_currency:
-				entry["debit"] = debit_in_account_currency
-
-			if credit_in_account_currency:
-				entry["credit"] = credit_in_account_currency
+			entry["debit"] = debit_in_account_currency
+			entry["credit"] = credit_in_account_currency
 		else:
 			date = currency_info["report_date"]
 			converted_debit_value = convert(debit, presentation_currency, company_currency, date)