Hello all. I don’t often create a new listings, when I have in the past I have managed it without issue. I fill in all of the fields on all of the pages and everything is fine. When I fill in the manufacture part number I get the following error.

The value ‘119581’ specified cannot be used as it conflicts with the value ‘Unknown’ for ASIN Z in the Amazon catalogue. If this is ASIN ‘B07KGJ21MY’, update the value to match the ASIN data. If this is a different product, update identifying information (UPC/EAN/Part Number/etc).

I have tried changing the part number and I get the same error message, only with the new part number in the message. Today I have created 4 new listings each time I get the error. If i start again and put in the same information sometimes it accepts the part number. Sometimes I have to enter all of the information 3 or 4 times then eventually it saves. Can anybody tell me what I am doing wrong as it is taking me ages to create each new product.