fix: handle gle for standalone credit and debit notes

(cherry picked from commit 98a8288)

erpnext/accounts/doctype/payment_entry/payment_entry.py

@@ -1072,24 +1072,27 @@ def add_party_gl_entries(self, gl_entries):
 					against_voucher_type = d.reference_doctype
 					against_voucher = d.reference_name
 
-				reverse_dr_or_cr = 0
+				reverse_dr_or_cr, standalone_note = 0, 0
 				if d.reference_doctype in ["Sales Invoice", "Purchase Invoice"]:
-					is_return = frappe.db.get_value(d.reference_doctype, d.reference_name, "is_return")
+					is_return, return_against = frappe.db.get_value(
+						d.reference_doctype, d.reference_name, ["is_return", "return_against"]
+					)
 					payable_party_types = get_party_types_from_account_type("Payable")
 					receivable_party_types = get_party_types_from_account_type("Receivable")
-					if is_return and self.party_type in receivable_party_types and self.payment_type == "Pay":
+					if is_return and self.party_type in receivable_party_types and (self.payment_type == "Pay"):
 						reverse_dr_or_cr = 1
-					elif is_return and self.party_type in payable_party_types and self.payment_type == "Receive":
+					elif (
+						is_return and self.party_type in payable_party_types and (self.payment_type == "Receive")
+					):
 						reverse_dr_or_cr = 1
 
+					if is_return and not return_against and not reverse_dr_or_cr:
+						dr_or_cr = "debit" if dr_or_cr == "credit" else "credit"
+
 				gle.update(
 					{
-						dr_or_cr: abs(allocated_amount_in_company_currency)
-						if reverse_dr_or_cr
-						else allocated_amount_in_company_currency,
-						dr_or_cr + "_in_account_currency": abs(d.allocated_amount)
-						if reverse_dr_or_cr
-						else d.allocated_amount,
+						dr_or_cr: abs(allocated_amount_in_company_currency),
+						dr_or_cr + "_in_account_currency": abs(d.allocated_amount),
 						"against_voucher_type": against_voucher_type,
 						"against_voucher": against_voucher,
 						"cost_center": cost_center,