Google Merchant Center issue
Invalid GTIN
A submitted Global Trade Item Number may be malformed or not the correct assigned identifier for the product.
Google’s source: Official Merchant Center guidance ↗
What Google is reporting
Google checks GTIN formatting and validity. Inspect whether the message is about length, non-numeric characters, check digit, or the wrong identifier.
Why this happens
- A digit was mistyped or the check digit is wrong.
- A store SKU or variant ID was submitted as a GTIN.
- The code includes unsupported formatting or belongs to another product.
These are possibilities, not a confirmed cause for your account.
Does it affect eligibility?
Incorrect unique product identifiers can limit visibility or lead to disapproval depending on Google's specific issue and destination.
How to diagnose it
- Check the affected product and its exact submitted GTIN.
- Compare the number with manufacturer or GS1 documentation for that variant.
- Review Google's issue details and whether the product actually has an assigned GTIN.
How to fix it
- Submit the correct manufacturer-assigned GTIN for the exact product.
- Correct formatting and check-digit errors at the source.
- If no GTIN was assigned, follow Google's identifier guidance instead of inventing one.
What CommerceVigil checks
CommerceVigil surfaces Google's identifier issue and affected offers; it does not verify manufacturer ownership of a GTIN or manufacture missing identifiers.
Google’s reported issue remains authoritative. AI explanations are separate from deterministic evidence checks.
Frequently asked questions
Can I use my store SKU instead?
No. A SKU is not a manufacturer-assigned GTIN.
Should I invent a GTIN for a custom product?
No. Review Google's identifier guidance for products without assigned identifiers.