Copy CPA DFF to Requisition DFF on Selection

We have a requirement in our project where we want a DFF on the requisition to automatically populate from a DFF on a Contract Purchase Agreement (CPA) when the requester selects that CPA as the source agreement during requisition entry.

Steps:

1. Create a CPA agreement with DFF having value.
2. While creating a requisition, select the above created CPA Agreement as source agreement.
3. DFF at Requisition level auto populate the DFF value from the selected CPA Agreement.