8541: The value AUTO_KEY_SHELL specified cannot be used as it conflicts with the value CAR_ALARM for ASIN B012345678 in the Amazon catalog. If this is ASIN B012345678, update the value to match the ASIN data. If this is a different product, update identifying information (UPC/EAN/Part Number/etc.).
None of my products are key shell products, but most of them are in this situation, and I have filed a request to lift the 8541 restriction for some of them.
For example, CASE ID 15444687111, most of the customer service just help me to submit a change of product type, or ask me to remove the link with inventory tool and wait for 24 hours, then re-upload it again with the correct product type "CAR_ALARM" template.
Obviously, neither of these solved the problem. So I've been unable to change the product information on many of my asin.
CASE ID 15444687111
CASE ID 15455004871