E2124 Cmd Rej: All links of LSN must use same error correction method
The same value must be specified for the ecm parameter for all links in a linkset.
Recovery
Display the settings for the 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 Database Administration - SS7 User's Guide (for an SS7 link) or to Database Administration - IP7 User's Guide (for an IP link) for assistance.