The provided SKU [SKU] conflicts with the Amazon catalog. The Standard Product ID value(s) provided for this SKU corresponds to the ASIN [ASIN]; however, some information is in conflict with the Amazon catalog. Following are the conflicting attribute values(s): Brand (Merchant: [MERCHANT_VALUE] / Amazon: [AMAZON_VALUE]). If your product is this ASIN, modify these attributes to reflect Amazon catalog values. If your product is different from this ASIN then check if the Standard Product ID value(s) are correct.
Error 8541 occurs when your product ID (UPC, EAN, JAN, ISBN etc.) appears to correspond to an existing ASIN, but some of the information submitted does not match the product information that is already in the Amazon catalogue for that ASIN. For example, if you try to list a book that is hardcover, but the ISBN for that book in the Amazon catalogue has a paperback binding, you will receive this error
To resolve this error, check to make sure the Product ID you have provided is correct. If it is incorrect, provide the correct product ID in your file and resubmit.
If the information in the Amazon catalog for this product appears to be incorrect, contact Seller Support.