Use the identifier exists [identifier_exists] attribute to indicate that unique product identifiers (UPIs) aren’t available for your product. Unique product identifiers are submitted using the GTIN [g

The GTIN [gtin] attribute is strongly recommended if the product is widely manufactured and has a GTIN. Products that have a GTIN [gtin], but submitted without one, may have limited visibility. …

Learn about the GTIN [gtin] attribute If the product doesn’t have a clearly associated MPN or is a custom-made product (for example, art, custom t-shirts, novelty products, and handmade …

How to fix your issue The values submitted for the GTIN [gtin] attribute must be those allocated by the manufacturer. Learn how to find a GTIN Fix products one by one directly in Merchant …

GTIN [gtin] Use the GTIN [gtin] attribute to submit Global Trade Item Numbers (GTINs). A GTIN helps us make your ad or unpaid listing easier for your customers to find. Products submitted …

Add a valid GTIN for one or more of your products. If your product has a barcode, you can normally find the GTIN on the packaging. For more information about the validation of GTINs, …

A Global Trade Item Number (GTIN) is a unique and internationally recognized identifier for a product. When a GTIN is available, it will appear next to the barcode on your product's …

Make sure you are using the GTIN [gtin] attribute provided by the manufacturer, and the additional product attributes are consistent with your product. Select Save. Fix multiple products at once …

How to fix the issue Check your product data for those products (using the ID), and make sure each product uses an accurate GTIN [gtin] that is not in the restricted ranges. Fix products one …

How to fix your issue For each product, provide the appropriate unique product identifier values (GTIN [gtin], MPN [mpn], and brand [brand]) based on our UPI guidelines. You may also need …