Screen/ User Exit for Internal Order

Hi,

I would like to one more field in Internal Order Master Data in TC KO01. I know the Table AUFK and i know there is one Include Structure (CI_AUFK). but i dont know how to add the field in that.

if you go to Screen Exit COOPA003. There is a Structure like CI_AUFK Structure there is no Calling screen in SMOD.

Can anybody please let me know how to do that?

It's really really very urgent.

your help would really appriciate.

Thanks,

Dhaval Shah.