I am new seller comer. Just do the listing and received the captioned subject message and quite sure that it is correct in the product classification because I do the listing of Christmas Ball Ornament. It is straight forward in the classification under “Home & Kitchen” but I received this message.
I am a new seller as well. I run a clothing brand so our variations are by size and color. I have a brand exemption as well since they are my own designs. I did some searching and what worked for me was making sure the size_name value was unique for each one of my child variations.