i want to use exit for tcode--- CAT2 in HR module
the requirement is whenever employ enters the time sheet details if the employ forgot to fill the network number (RNPLNR) which is in Data entery section
at the time of seving the system has to give an error msg.
for this am using Enhancement CATS0006 and the exit name is EXIT_SAPLCATS_006
but i don't under stand how to write code for perticular that field?
plz its urgent,
i want code for that.
Thanks & Regards