Meta Catalog: Universal IDs are missing
Universal IDs Are Missing: brand, gtin, mpnWhat's happening
The product has none of brand, GTIN, or MPN, and Meta needs at least one universal identifier for an e-commerce item. This is a warning, not a hard reject: the product still lists, but its ad and Shop performance is limited and match quality drops. Meta recommends a GTIN where one exists, an MPN when it does not, and brand as the minimum fallback. It is the Meta counterpart of Google's "limited performance due to missing identifier" warning.
brandgtinmpnManual fix
Add at least one identifier to each flagged product in your CMS, mapping it to g:brand, g:gtin, or g:mpn, then re-export. Where a real GTIN or MPN exists (often on the packaging or the manufacturer datasheet), use it; otherwise set brand so the item clears the at-least-one rule.
Fix it with Emberfeed
If you already hold the value in another field (an EAN column, a metafield, a custom_label), a mapping rule writes it into g:gtin or g:brand across every product at once. Honest limit: if a product genuinely has no brand and no manufacturer code, Emberfeed cannot fabricate one, the identifier has to come from your data or the manufacturer.
Related guide
Related rejections
Catch Meta Catalog feed issues before they do.
Emberfeed checks every product against Meta Catalog's required fields and format rules, and most problems come with a fix: a field rule for the whole feed or an override for one product. It also measures your product photos, while rendering them and in the background after each refresh, and flags the ones that are too small for Meta Catalog.
Emberfeed is a hosted tool: it imports your existing product feed, renders every product image through one template and serves a new feed URL for Meta, Google, TikTok, Heureka, Zboží.cz and Glami. It costs 25 € per feed per month, and the first 3 months are free on one feed up to 1,000 products.