diff --git a/account_reconcile_oca/models/account_bank_statement_line.py b/account_reconcile_oca/models/account_bank_statement_line.py
index 5a046b33..63b24cf0 100644
--- a/account_reconcile_oca/models/account_bank_statement_line.py
+++ b/account_reconcile_oca/models/account_bank_statement_line.py
@@ -565,11 +565,14 @@ class AccountBankStatementLine(models.Model):
                 continue
             new_data.append(line_data)
             liquidity_amount += line_data["amount"]
-
+        partner = (
+            reconcile_model._get_partner_from_mapping(self) or self._retrieve_partner()
+        )
         for line in reconcile_model._get_write_off_move_lines_dict(
-            -liquidity_amount, self._retrieve_partner().id
+            -liquidity_amount, partner.id
         ):
             new_line = line.copy()
+            new_line["partner_id"] = partner and partner.name_get()[0] or False
             amount = line.get("balance")
             if self.foreign_currency_id:
                 amount = self.foreign_currency_id._convert(