E4572 Cmd Rej: Requires force since Loopset is in use by GTT
The force parameter must be specified to modify a loopset that is being referenced by the GTT feature.
Recovery
Determine whether the loopset is referenced by the GTT feature. Enter the rtrv-gtt command.
Modify the loopset settings as necessary. Refer to the Database Administration - GTT User's Guide for assistance.
Re-enter the chg-loopset 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.