Problem: If you're experiencing issues with invalid or duplicate GTIN, UPC, EAN, or ISBN errors in WooCommerce after integrating with Google, particularly when creating products in a non-English language, you're not alone. This problem arises during the inclusion of new products, updating product stock, and making adjustments in product descriptions. Solution: We have replicated this issue and reported it to our development team for resolution in a future release. Although the error message appears, please note that all updated data in the product is still saved successfully when you click Update. The GTIN code is also correctly displayed in the database for both the original and translated products. A fix for this issue is confirmed to be included in one of the upcoming updates.
Please be aware that this solution might be outdated or not applicable to your specific case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the problem persists, please open a new support ticket.
