Adding an additional field to FM document structure

Hi All

I am trying to add Purchase Organization (EKORG) field to the FM document structure and I need help.

The commitment item is derived based on GL + Purchase Org field at the time of PO. To serve this purpose, I have included Purchase Org field in my FMDerive using "EXIT_SAPLFMDT_002"

Would adding the purchase org field to the structure FMAVC_S_AFMA_ADDRESS_SUPPL in the ABAP Dictionary should do the job? With the technical team's help, I added the field to the above structure but it still does not show up in my FM document layout selection.

Please suggest if there is any other BAdi to include a field in FM document structure.

Thank a lot.

PV