Vendor assessment level D but cannot steer out of the AVL list, it might be due to the product vendor or service provider customer or as an affiliate or as a single vendor that already exist.
Vendors are evaluated in D, but can not copy the list of AVL may be due to the seller of the product or service the customer. Or its affiliates Or as the only vendors that are available.
The seller with the evaluation results were D but not a copy of the list out of the AVL, probably because the seller is a product or service that customers set. Or is a subsidiary or seller is only one available.