From 0eef296b8dcdf21a5488d25b95074a2626a76fba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roger=20Escol=C3=A0?=
 <38502143+rescola@users.noreply.github.com>
Date: Tue, 1 Dec 2020 11:59:58 +0100
Subject: [PATCH] [13.0][FIX] account_banking_mandate: fixes singleton error
 when posting some records with mandate

---
 account_banking_mandate/models/account_move.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/account_banking_mandate/models/account_move.py b/account_banking_mandate/models/account_move.py
index 3405c9734..8c07f0795 100644
--- a/account_banking_mandate/models/account_move.py
+++ b/account_banking_mandate/models/account_move.py
@@ -21,7 +21,8 @@ class AccountMove(models.Model):
     )
 
     def post(self):
-        self.line_ids.mandate_id = self.mandate_id
+        for record in self:
+            record.line_ids.write({"mandate_id": record.mandate_id})
         return super(AccountMove, self).post()
 
     @api.model