E4143 Cmd Rej: GPORT/IGM must be enabled or VFLEX must be ON
The G-Port or IGM feature must be enabled or the V-Flex feature must be turned on before the multcc and nmultcc parameters can be specified.
Recovery
Display the status of controlled features in the system. Enter the rtrv-ctrl-feat command.
If the feature does not appear in the output, then the feature is not enabled. If the feature has a status of OFF, then the feature is enabled but is not turned on.
Enable and turn on the desired feature. Refer to the associated feature manual for assistance.
Re-enter the chg-gsmopts command that generated this error message.