Identifier Not Unique Error in Feed Review

Paweł Updated by Paweł

Problem: Identifier Not Unique

Product Status: With Warnings 😐

This problem may appear for the IDs of your products, or their GTINs. Those values need to be unique, otherwise the products will be treated as if they were duplicated.

Please make sure that you are using a field, that has unique values provided for every single product. If necessary, please review your source.


  1. If you have product variants in your shop, map this field with variant ID instead of ID
  2. Exclude the products with not unique values using the Include/Exclude Products section (optional)

Did this article help you solve the problem?

Empty Field Error in Feed Review

Feed Quality Score in DataFeedWatch