Find the package of a tcd / program, and then find enhancements
Opt 1:
Go to SE16 , search Tables : TSTC,TADIR."
Opt 2:
Call SE93 give the transaction code and press display, you got
- devclass of the transaction "ZA*****"
- a program or another transaction, double-click and then menu goto, attributes you get the devclass of program Name again (but sometimes it changes)