id identifier Fix “Duplicate items in feed” on Pinterest Catalog
Multiple feed rows share the same id. Pinterest keeps the first match and drops the rest. Hidden inventory gap because the dropped rows don't appear in error reports.
What you see in Pinterest Catalog:
Duplicate items in feed Multiple feed rows sharing the same id get the dropped-rows silently removed. Pinterest keeps first match; subsequent duplicates disappear.
Audit by sorting feed by id. For multi-region feeds, region-suffix the ids to maintain uniqueness across regions.
Top causes
- 1
Multi-region feed combining same SKU under one id
- 2
Variant items not properly distinguished
- 3
Bulk import errors creating duplicates
How to fix it
- 1
Audit for duplicate IDs
Sort feed by id. Any value appearing more than once is the issue.
- 2
Enforce uniqueness in generation
For multi-region feeds, suffix IDs with region codes to keep uniqueness.
Related issues
Duplicate ID
Two or more rows in the feed share the same id. Google can only accept one item per id — the others are silently dropped, leading to inventory gaps you'd otherwise miss.
Read moreDuplicate listing
Amazon detected another listing for the same product (matching GTIN, brand, and key attributes). Amazon's catalog policy is one ASIN per product — duplicates are merged or suppressed.
Read moreRelated fields
Related tools
FAQ
Why doesn't Pinterest just merge duplicates?
First match wins — Pinterest can't tell which row is intended canonical. Easier to require unique IDs upstream than guess.
Last reviewed: 26 May 2026
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