Fix duplicate retailer IDs in a Shopify Facebook catalog
Meta requires one unique item identifier per catalog item. Duplicate SKUs are a common source-side cause, but product grouping must use a separate group identifier.
Common causes
- A SKU was copied across variants.
- A CSV import duplicated identifiers.
- A feed mapped the same source field to every item ID.
What to check first
- Export Shopify variants and sort by SKU.
- Look for exact duplicates, including hidden spaces.
- Compare affected retailer IDs in Commerce Manager.
How to resolve it
- Assign a stable unique SKU to each variant.
- Keep related variants under one Shopify product.
- Resync and verify both catalog items remain present.
Stop checking variants one by one
MetaFix identifies deterministic catalog problems directly from your Shopify data. The diagnosis is unlimited and requires no Meta login.
Install MetaFix from Shopify