Ideas for Managing New Supplier and Supplier Update Approvals

We are exploring options for managing the approval process for creating new suppliers as well as ways to secure or approve the updating of existing supplier. For new suppliers, ideally, we would want a workflow where UserA would create the supplier record. The supplier record will not be activated yet until the approval request for the supplier is approved by UserB. For supplier updates, maybe have a way to require approvals for the updates of specific supplier record fields.

For new supplier registrations, I am aware of a Supplier Approval workflow as part of iSupplier where a supplier registration is created and the supplier is sent notifications where they can view the status and generally informed of the progress along the approval process. They also get a login so that they can view the registration.