Starting in December 2024, Google will allow slight differences between the language of your product feed and your website.
Product titles, descriptions, and variants in a different language than the feed are acceptable if most product data matches the feed’s language. However, such listings may perform poorly due to mismatched user expectations.
The checkout process must still align with the feed language.
For more details, see Google’s official announcement here: Policy Update: Inconsistent language between source and website.
