E4278 Cmd Rej: APCNTYPE parameter is only valid for ITUN/ITUN24 link sets
The apcn or apcn24 parameter must be specified before the apcntype parameter can be specified.
Recovery
If necessary, display the existing settings for the linkset. Enter the rtrv-ls command.
Re-enter the ent/chg-ls 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 (SS7 linksets) or Database Administration - IP7 User's Guide (IP linksets) for assistance.