Missing required attribute: GTIN

Google can't find a GTIN (Global Trade Item Number) on your product. Without one, Google can't reliably match your product to its catalog, so the product is blocked from Shopping ads and free listings.

Either the gtin field is empty in your feed, or it's filled with a value Google can't validate (wrong length, invalid checksum, or you submitted a manufacturer code where a GTIN was required). Google requires a valid 8/12/13/14-digit GTIN for almost every product with a barcode — UPCs, EANs, ISBNs, and JANs all qualify.

1. Confirm the product actually has a GTIN. Look at the physical packaging or your supplier's catalog for a UPC (12 digits, US), EAN (13 digits, EU), ISBN (books), or JAN (Japan).
2. Add the GTIN to the gtin field in your feed. Don't put it in mpn or any other identifier field.
3. Validate the GTIN check digit before submitting — bad checksums are a common silent failure.
4. If the product genuinely has no GTIN (handmade, custom, or vintage), set identifier_exists to FALSE in the feed AND submit both brand and mpn — Google requires the alternate identifiers in that case.
5. Resubmit the feed and wait 24–72 hours for Google to recrawl and re-approve.

• Submitting the manufacturer model number (MPN) in the gtin field — they are different attributes
• Trusting your PIM's auto-generated identifiers — many systems pad short SKUs with zeros and submit them as fake GTINs
• Forgetting that variants (different colors/sizes of the same product) each need their own GTIN