Hi there, I'm trying to add a SKU that already has around 17 sellers on the listing. I'm approved to sell it and it's quite a popular listing. When adding the item, it takes me to the page where I can fill in the packing details/print FNSKU's/etc, but on that page I get the error "The SKU for this product is unknown or cannot be found.". The listing never appears in my inventory no matter how many different times I try. I've tried different browsers as well as doing it on my phone.

The listing does appear in my drafts but the message there says "There is no record of the SKU corresponding to this update on your account. This commonly occurs when there are other issues on your SKU.. SKU B001V9MPR0-FBA does not match any ASIN and contains invalid values for attributes required for creation of a new ASIN. New ASIN creation requires the following attributes, for which this SKU provided invalid attribute value(s): merchant_suggested_asin."

I'm not trying to create a new listing like the draft thinks, I'm trying to get added to an already popular listing. I haven't had this issue with any other items I've listed before. Any help would be appreciated. Thank you!