i keep getting an error message " the value specified is invalid " when trying to list products BUT it does not tell me what value is invalid - support are not help

We have particular ASIN in all EU marketplaces, but we are not able to create a new SKU for it in NL PE BE marketplaces as we are getting an error message" SKU 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."

We have tried to use newly generated templates (both beta and old one) nothing is working, add a product doesnt work aswell - the new sku just doesnt show up in our inventory.

One interesting thing that while we are trying to go to "Complete Drafts" section and use ASIN in order to create a new SKU - we are getting an error that we are not allowed to create new products for OUR brand.

While trying to list it with EAN code - we are getting an error that we cannot create new products for some kind of a brand we are not related with.

Please provide us assistance on this issue.

CASE id's: 10916538962 10891404542

Regards

Hi guys,

I'm attempting to upload a file for products that are new to Amazon catalogue, under the file type Inventory Files for Specific Categories.

I have filled in the required information, but I get an error message saying 90009 Fatal The file's header row is missing or invalid. The header row is for Amazon use only and must not be modified or deleted. To correct this error, download the template again from seller Help and use that new copy, or insert the correct header row directly above the column headings in your existing file.

I've reuploaded it numerous times as different file types, I've tried contacting Amazon but all to no avail. I've also seen people have had this issue for years but can't find a fix.

Any help would be much appreciated