It would seem that you cannot CP DISC HOLD from a VTAM session, because some smart ass has decided that it's easier to say "INVALID OPTION" than to ignore the option. So, 1.5l will probably complain if you try a DISC command from a VTAM terminal. Use CP DISC instead. 1.5m will do a CP DISC HOLD *and* a CP DISC, with a DIAG(8,..) so as to suppress the stupid error message. Eric