How to create tenant BP by using vendor?

Hi All Friends,

For some reasons, we didn't apply AR module to manage the customer account. Instead of that, we apply AP module to manage the customer account, and we use vendor to post the AR items. This "vendor" has a different reconciliation account.

Now, we want to apply SAP RE-FX module. I want to have a confirmation, whether we can operate the commercial lease-out transaction by using vendor master data instead of customer. For example, can I create the TR0600 BP Role by vendor or involve other vendor BP role into commercial lease-out contract?

Our requirement is only to realize commercial lease-out transaction but no need to apply AR module for RE-FX.

Thanks!

Bin