Fix "No global identifier provided" on Shopify
The error
No global identifier provided (e.g., gtin, brand)What it means
Google uses global identifiers (a GTIN, plus brand, or an MPN) to match your product to the same item across the web and to rank it. This warning means your structured data has none, which limits how your product can show and can lead to disapprovals in some categories.
Why it happens on Shopify
Shopify stores the barcode (which is usually the GTIN) on each variant, and the vendor field is your brand, but themes typically don't include gtin or brand in the generated Product JSON-LD. So the data exists in your store; it just isn't exposed where Google looks.
How to fix it
- Add the brand to your structured data using your product's vendor.
- Add the gtin using the variant's barcode value (Shopify already stores it on the variant).
- For products that genuinely have no manufacturer GTIN, provide an mpn instead.
- Re-test and request re-validation once identifiers are present.
FeedGuard reads the real barcode from your store and shows you the exact value to use as the GTIN.
Check your store for this issue
Paste a product URL to see whether it has this problem — and what else might be putting your Google Shopping listings at risk.