Hi all,

I am attempting to update two products by uploading a product template. This fails, and returns the following error for both:

The Listing data provided is different from what's already in the Amazon catalog. The ean provided matches ASIN XXXX, but some of the listing data contradicts what is already in the Amazon catalog. The following listing attribute value(s) conflict with Amazon catalog value(s): 'product_type' (Merchant ["SHEET_PAPER", "ART"] / Amazon ["ACCESSORY_OR_PART_OR_SUPPLY"]). To fix the issue, please follow these steps 1) If the product you are listing is the same as XXXX, then update your listing's 'product_type' attribute(s) to match Amazon's catalog value, 2) If it's not the right ASIN, make sure the ean provided is correct, or 3) If you disagree with the data in Amazon catalog contact Selling Partner Support to start the appeal process.'

I am both the manufacturer and registered brand owner for these items, and can confirm that SHEET_PAPER is the appropriate product_type.

I have requested Seller Support change the product_type to SHEET_PAPER, to prevent this conflict occurring, but Seller Support tell me that both products ALREADY HAVE product_type SHEET_PAPER.

So what is causing the conflict?! Seller Support appear to be completely incapable of diagnosing (or even understanding) the problem, all they do is tell me over and over again which error message I'm receiving (which I'm well aware of, and in fact told them in the first place) and that product_type is already SHEET_PAPER.

The problem doesn't seem to be resolvable from my end, and Seller Support seem to be unable to offer actual technical assistance at their end. Has anyone had a similar issue, and found a way around it?

Thank you.