Alternate Approach for Supplier Contact User Account Creation

We would like to understand whether a supplier contact user account can be created independently, without using the external or internal supplier registration links, and apart from the following existing options:

Create Supplier → Supplier Contact → Create User Account
Register Supplier → Supplier Contact → Create User Account
Supplier registration review and approval
Supplier profile change request review and approval
Suppliers Work Area → Manage Suppliers → Edit Supplier flow
Suppliers Work Area → Import Suppliers task
Supplier Portal → Manage Profile (user provisioning by suppliers on behalf of their company)

Please confirm if Oracle Fusion supports any alternative or separate mechanism for creating supplier contact user accounts beyond the above‑mentioned flows.