Purchase Order Accounting Derivation WITHOUT Requisition

Summary

Setup of TAB for Purchase Orders not tied to Requisitions

Content

Our client is not doing reqs and will strictly do Purchase Orders, but how would that change impact TAB? We would like the accounting for POs to generate the same way we had setup for reqs through TAB and mapping sets. In the normal flow, the PO accounting would pull from the Requisition but can it be generated automatically without the Requisition as well? Has anyone used TAB for purchase orders strictly? The Natural account could be tied to a mapping set for purchasing categories. Has anyone else done this in the cloud, with No reqs and only POs? Any help