KOMP structure into EKPO table

Hi,

There is a requirement in which data is to be moved from KOMP structure into custom fields in EKPO table. I have already appended structure into EKPO.

The values have to be populated when creating PO & receiving into DC.

I have no idea how to populate the values at run time? Did lot of research..

Any help will be greatly appreciated,

Regards,

Ankush