How to copy DFF from PO line to AP invoice line

Summary:

Hi there,

I have a requirement to create a descriptive flexfield at the requisition line level, and have this information flow to the purchase order and ultimately to the AP invoice.

The DFF is required to be context sensitive based on Requisitioning BU (ie should only be visible for requisitioners in that requisitioning BU)

Content (please ensure you mask any confidential information):

I can see there are various profile options enabled which allow the DFF to be copied from the requisition header/line/distribution to the PO header/line/distribution.

However, it appears that it is only possible to have a Derived context segment at the Requisition Line level