Can you copy a DFF Attribute from Requisition Line to PO Line?

Summary

We have a requirement to do multi period accounting for PO backed invoices, but need to input the Start / End date at the requisition line, not the PO.

Content

For background, our Self Service Procurement users create a requisition and once it's approved, the PO is auto created. Self Service Procurement users do not have access to directly change the Purchase Order (this is limited to the Procurement team). We are currently attaching amortization instructions in an Excel document, which is then pulled by the Accounting team for monthly amortization entries. It is very tedious. We are looking for a way to add DFF's to the requisition line that would allow users to input the Start Date / End Date for the service period and then pull into the