Amazon error 18564: The ASIN is a duplicate of another ASIN
What does it mean?
Amazon merged or suppressed your ASIN in favour of an existing one.
How to fix it
List on the existing ASIN.
Where do you fix it?
- In your product data (your source)
- 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
- 8004The SKU may be identical to an existing ASIN
- 18102Matching could not proceed
Source
Summarised in our own words; Amazon's page is leading.