From 670f3f894daf2bec9a7c33110d3da78bc41a6ea1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Tue, 6 Feb 2024 23:53:28 +0100
Subject: [PATCH] Lock the table before checking uniqueness of coupon number

Closes #13011
---
 modules/sale_promotion_coupon/sale.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/modules/sale_promotion_coupon/sale.py b/modules/sale_promotion_coupon/sale.py
index cebcceb171..1df774e7fe 100644
--- a/modules/sale_promotion_coupon/sale.py
+++ b/modules/sale_promotion_coupon/sale.py
@@ -155,6 +155,7 @@ class PromotionCouponNumber(DeactivableMixin, ModelSQL, ModelView):
     def check_unique(cls, numbers, field_names=None):
         if field_names and not (field_names & {'number', 'coupon'}):
             return
+        cls.lock()
         duplicates = []
         for sub_numbers in grouped_slice(numbers):
             domain = ['OR']