feat: Config to enable immutable ledger

erpnext/accounts/general_ledger.py

@@ -8,6 +8,7 @@ import frappe
 from frappe import _
 from frappe.model.meta import get_field_precision
 from frappe.utils import cint, flt, formatdate, getdate, now
+from frappe.utils.dashboard import cache_source
 
 import erpnext
 from erpnext.accounts.doctype.accounting_dimension.accounting_dimension import (
@@ -574,6 +575,8 @@ def make_reverse_gl_entries(
 	and make reverse gl entries by swapping debit and credit
 	"""
 
+	immutable_ledger_enabled = is_immutable_ledger_enabled()
+
 	if not gl_entries:
 		gl_entry = frappe.qb.DocType("GL Entry")
 		gl_entries = (
@@ -605,7 +608,6 @@ def make_reverse_gl_entries(
 			for x in gl_entries:
 				query = (
 					frappe.qb.update(gle)
-					.set(gle.is_cancelled, True)
 					.set(gle.modified, now())
 					.set(gle.modified_by, frappe.session.user)
 					.where(
@@ -620,9 +622,14 @@ def make_reverse_gl_entries(
 						& (gle.voucher_detail_no == x.voucher_detail_no)
 					)
 				)
+
+				if not immutable_ledger_enabled:
+					query = query.set(gle.is_cancelled, True)
+
 				query.run()
 		else:
-			set_as_cancel(gl_entries[0]["voucher_type"], gl_entries[0]["voucher_no"])
+			if not immutable_ledger_enabled:
+				set_as_cancel(gl_entries[0]["voucher_type"], gl_entries[0]["voucher_no"])
 
 		for entry in gl_entries:
 			new_gle = copy.deepcopy(entry)
@@ -641,6 +648,10 @@ def make_reverse_gl_entries(
 			new_gle["remarks"] = "On cancellation of " + new_gle["voucher_no"]
 			new_gle["is_cancelled"] = 1
 
+			if immutable_ledger_enabled:
+				new_gle["is_cancelled"] = 0
+				new_gle["posting_date"] = frappe.form_dict.get("posting_date") or getdate()
+
 			if new_gle["debit"] or new_gle["credit"]:
 				make_entry(new_gle, adv_adj, "Yes")
 
@@ -733,3 +744,7 @@ def validate_allowed_dimensions(gl_entry, dimension_filter_map):
 						),
 						InvalidAccountDimensionError,
 					)
+
+
+def is_immutable_ledger_enabled():
+	return frappe.db.get_single_value("Accounts Settings", "enable_immutable_ledger")