The A-Port feature must be turned on before the MO- or MT-based IS41 SMS NP feature can be turned on.
Recovery
Display the status of the A-Port feature. 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 A-Port feature as necessary. Refer to the A-Port User's Guide for assistance.
Re-enter the chg-ctrl-feat command that generated this error message.
