E5127 Cmd Rej: CGCNVSN is invalid when GTTSET type is not cggta/cdgta
The GTT set specified by the gttsn parameter must have a set type of cdgta or cggta (see the ent-gttset command) before the cgcnvsn parameter can be specified.
Recovery
Display the GTT set information. Enter the rtrv-gttset command.
Revise the GTT set information as necessary. Refer to the Database Administration - GTT User's Guide for assistance.
Re-enter the ent/chg-gta command that generated this error message, specifying a valid combination of parameters. Refer to the command description in Commands User's Guide and to the Database Administration - GTT User's Guide for assistance.