Field Mapping SRM to MM

Hi All,

We need to map some Z fields from SRM(7.02) to MM.

We tried putting enhancement in BAP_PO_CREATE1 but not sure that this BAPI triggers while creating PO.

Please suggest if some badi / exit? where we populate the custom fields.

There are some custom fields in PR also that also need to be copied while creating PO is there option available for same.

Regards,

Navdeep Singh