The value specified for the slc parameter cannot already be used by a link in the linkset.
Recovery
Display the signaling links in the linkset. Enter the rtrv-ls:lsn= command.
Re-enter the ent-slk 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 - SS7 User's Guide (SS7 links) and the Database Administration - IP7 User's Guide (IP links) for assistance.