Hello!

I am attempting to add new colors and sizes to a product that already has a multitude of different variations successfully added before. For some listings, the variations being added with no issues, however for majority of the edits, I get the same 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.

The parent has already been created and in existence for over a year now and I want to add the new variations as a child.

Please advise any pertinent information on this topic, and insight on why this is happening.

Thanks in advance!