via enhancement MM06E005 I have implemented my custom tab. CUSTSCR1 SAPLXM06-0111.
Everithings works ok: I am able to see my tab end custom fields (added in CI_EKPODB), and also I manage fine values and save data.
Now via EXIT_SAPMM06E_012 I'm able to check custom fields (added in CI_EKPODB) showed in tab. CUSTSCR1 SAPLXM06-0111 but I would like to link my error message to my cutom field. Can I mapp mmmfd_cust_01 with my custom field or I can only do it if I have created tab SAPLXM06-0111 with BADI and not with user-exit?