Hi,
I’ve never seen this issue before and have no idea how to fix it. This is happening on the listings for my own brand, and I am the brand owner.
This is what I am seeing:
Restricted edit permissions
As you are not the brand owner for this product, you can only create an offer for this ASIN. You are not authorised to make or request an update for any other attribute for this product. If you are the brand owner,
please make sure that you’re registered in Brand Registry and this ASIN is registered to your brand.