Merge pull request #55165 from frappe/mergify/bp/version-15-hotfix/pr-55130

perf: skip delink_original_entry during cancellation when Immutable Ledger is enabled (backport #55130)

erpnext/accounts/doctype/payment_ledger_entry/test_payment_ledger_entry.py

@@ -3,8 +3,9 @@
 
 import frappe
 from frappe import qb
+from frappe.query_builder.functions import Count, Sum
 from frappe.tests.utils import FrappeTestCase, change_settings
-from frappe.utils import nowdate
+from frappe.utils import add_days, nowdate
 
 from erpnext.accounts.doctype.payment_entry.payment_entry import get_payment_entry
 from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_entry
@@ -94,6 +95,7 @@ class TestPaymentLedgerEntry(FrappeTestCase):
 			posting_date = nowdate()
 
 		sinv = create_sales_invoice(
+			posting_date=posting_date,
 			qty=qty,
 			rate=rate,
 			company=self.company,
@@ -535,3 +537,82 @@ class TestPaymentLedgerEntry(FrappeTestCase):
 		# with references removed, deletion should be possible
 		so.delete()
 		self.assertRaises(frappe.DoesNotExistError, frappe.get_doc, so.doctype, so.name)
+
+	@change_settings(
+		"Accounts Settings",
+		{"enable_immutable_ledger": 1},
+	)
+	def test_reverse_entries_on_cancel_for_immutable_ledger(self):
+		invoice_posting_date = add_days(nowdate(), -5)
+		gle = qb.DocType("GL Entry")
+		ple = qb.DocType("Payment Ledger Entry")
+
+		si = self.create_sales_invoice(qty=1, rate=100, posting_date=invoice_posting_date)
+
+		gles_before = (
+			qb.from_(gle)
+			.select(
+				Count(gle.name),
+			)
+			.where((gle.voucher_type == si.doctype) & (gle.voucher_no == si.name) & (gle.is_cancelled == 0))
+			.run()[0][0]
+		)
+		ples_before = (
+			qb.from_(ple)
+			.select(
+				Count(ple.name),
+			)
+			.where((ple.voucher_type == si.doctype) & (ple.voucher_no == si.name) & (ple.delinked.eq(0)))
+			.run()[0][0]
+		)
+
+		si.cancel()
+
+		gles_after = (
+			qb.from_(gle)
+			.select(Count(gle.account))
+			.where((gle.voucher_type == si.doctype) & (gle.voucher_no == si.name) & (gle.is_cancelled == 0))
+			.run()[0][0]
+		)
+		self.assertEqual(gles_after, gles_before * 2)
+
+		ples_after = (
+			qb.from_(ple)
+			.select(
+				Count(ple.name),
+			)
+			.where((ple.voucher_type == si.doctype) & (ple.voucher_no == si.name) & (ple.delinked.eq(0)))
+			.run()[0][0]
+		)
+		self.assertEqual(ples_after, ples_before * 2)
+
+		# assert debit/credit are reversed
+		gl_entries = (
+			qb.from_(gle)
+			.select(gle.account, Sum(gle.debit).as_("total_debit"), Sum(gle.credit).as_("total_credit"))
+			.where((gle.voucher_type == si.doctype) & (gle.voucher_no == si.name) & (gle.is_cancelled == 0))
+			.groupby(gle.account)
+			.run(as_dict=True)
+		)
+		for gl in gl_entries:
+			with self.subTest(gl=gl):
+				self.assertEqual(gl.total_debit, gl.total_credit)
+
+		# assert amounts are reversed
+		pl_entries = (
+			qb.from_(ple)
+			.select(ple.account, Sum(ple.amount).as_("total_amount"))
+			.where((ple.voucher_type == si.doctype) & (ple.voucher_no == si.name) & (ple.delinked == 0))
+			.groupby(ple.account)
+			.run(as_dict=True)
+		)
+		for pl in pl_entries:
+			with self.subTest(pl=pl):
+				self.assertEqual(pl.total_amount, 0)
+
+		self.assertFalse(
+			frappe.db.exists(
+				"Payment Ledger Entry",
+				{"voucher_type": si.doctype, "voucher_no": si.name, "delinked": 1},
+			)
+		)

erpnext/accounts/utils.py

@@ -1934,8 +1934,9 @@ def create_payment_ledger_entry(
 			ple = frappe.get_doc(entry)
 
 			if cancel:
-				delink_original_entry(ple, partial_cancel=partial_cancel)
-				if is_immutable_ledger_enabled():
+				if not is_immutable_ledger_enabled():
+					delink_original_entry(ple, partial_cancel=partial_cancel)
+				else:
 					ple.delinked = 0
 					ple.posting_date = frappe.form_dict.get("posting_date") or getdate()
 
@@ -2027,6 +2028,7 @@ def delink_original_entry(pl_entry, partial_cancel=False):
 			qb.update(ple)
 			.set(ple.modified, now())
 			.set(ple.modified_by, frappe.session.user)
+			.set(ple.delinked, True)
 			.where(
 				(ple.company == pl_entry.company)
 				& (ple.account_type == pl_entry.account_type)
@@ -2043,9 +2045,6 @@ def delink_original_entry(pl_entry, partial_cancel=False):
 		if partial_cancel:
 			query = query.where(ple.voucher_detail_no == pl_entry.voucher_detail_no)
 
-		if not is_immutable_ledger_enabled():
-			query = query.set(ple.delinked, True)
-
 		query.run()