diff --git a/addons/product/i18n/product.pot b/addons/product/i18n/product.pot
index f7d45412de6..f1c01a7cb78 100644
--- a/addons/product/i18n/product.pot
+++ b/addons/product/i18n/product.pot
@@ -2424,6 +2424,12 @@ msgstr ""
 msgid "You cannot define the decimal precision of 'Account' as greater than the rounding factor of the company's main currency"
 msgstr ""
 
+#. module: product
+#: code:addons/product/models/product_template.py:332
+#, python-format
+msgid "You cannot define two attribute lines for the same attribute."
+msgstr ""
+
 #. module: product
 #: code:addons/product/models/product_attribute.py:79
 #, python-format
diff --git a/addons/product/models/product_template.py b/addons/product/models/product_template.py
index f20e3da3dc5..afe17aaadad 100644
--- a/addons/product/models/product_template.py
+++ b/addons/product/models/product_template.py
@@ -326,6 +326,12 @@ class ProductTemplate(models.Model):
             raise ValidationError(_('The default Unit of Measure and the purchase Unit of Measure must be in the same category.'))
         return True
 
+    @api.constrains('attribute_line_ids')
+    def _check_attribute_line(self):
+        if any(len(template.attribute_line_ids) != len(template.attribute_line_ids.mapped('attribute_id')) for template in self):
+            raise ValidationError(_('You cannot define two attribute lines for the same attribute.'))
+        return True
+
     @api.onchange('uom_id')
     def _onchange_uom_id(self):
         if self.uom_id: