E4388 Cmd Rej: Exception route cannot be assigned to adjacent point code
The value specified for the dpc parameter cannot already be used as an adjacent point code (APC).
Recovery
Determine whether the point code is an APC. Enter the rtrv-ls and rtrv-rte commands.
Re-enter the ent-rtx 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 for assistance.