E4631 Cmd Rej: Multiple Linksets to Single Adjacent PC feature must be ON
The Multiple Linksets to Single Adjacent PC (MLS) feature must be enabled and turned on before the spc parameter can be specified.
Recovery
Display the status of the MLS 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 the MLS feature as necessary. Refer to the Database Administration - SS7 User's Guide for assistance.
Re-enter the chg-ls command that generated this error message.