E4727 Cmd Rej: SPC cannot be assigned to entry that uses PPC
If the prx=yes parameter is specified, then the spc/spca/spci/spcn/spcn24 parameter cannot be specified.
Recovery
Determine whether a proxy point code is used. Enter the rtrv-dstn command.
Re-enter the chg-dstn command that generated this error message, specifying a valid combination of parameters. Refer to the Database Administration - SS7 User's Guide for assistance.