one-time supplier option in supplier profile

Summary

one-time supplier option in supplier profile

Content

Dear Gurus,

We are currently in a detailed planning phase for a prospective supplier to implement oracle procurement. As part of that phase we are demoing the supplier model. One of the questions which supplier asked is the purpose of "One-time Supplier" flag in the supplier profile. 

i thought that this was equivalent to payment requests in payables where we can dynamically create payment request to a non supplier in the system. The TCA architecture creates them as parties for payment. But for one-time supplier, I can create multiple payments, create req/PO. I am not able to see the difference.