Amazon error 8004: The SKU may be identical to an existing ASIN
What does it mean?
Amazon suspects a duplicate.
How to fix it
List against the existing ASIN, otherwise contact Seller Support.
Where do you fix it?
- In your product data (your source)
- Through Seller Support
- 8541Your data conflicts with an existing ASIN
- 8542Your data conflicts with several ASINs
- 8560Not enough information to match or create the ASIN
- 8567No ASIN match and invalid values for creating one
- 8573Potential matches were found for the product
- 5501No product was found for the product ID
- 18102Matching could not proceed
- 100980The barcode is already linked to a different product
Source
Summarised in our own words; Amazon's page is leading.