Qualification Required in Stranded Inventory Amazon FBA UK

Amazon stranded my products for an unspecified reason. Despite asking for the reason multiple times, the only response I received from the case is "Needs approval to sell in Amazon and currently Amazon is not accepting applications to sell this ASIN." I have same unit under different parent, they are active.But some of my products became stranded. My 227 units are stranded. I can't solve the problem. They are not showing the necessary documents required for listing.What can ı do about this troble?