Requirement to setup approval workflow based on foreign currency

Summary:

The client requires setting up the approval workflow based on foreign currency. The approval routing should be different for both local and foreign currency. The POs will be created from the planned orders (planning module).

Content (please ensure you mask any confidential information):

Proposed to use DFF, and buyer should manually update the DFF in the PO, and accordingly, the approval process will be routed. But client does not agree for the manual DFF update. Also, there is a risk in the manual DFF because if there is a BPA agreement available, then automatically, the PO will created and approved. Let us know if there is a possibility to auto default the DFF OR there is a way to set approval workflow for this requirement