E2121 Cmd Rej: PCRN1 and PCRN2 parameters are invalid if ECM=BASIC
If the ecm=basic parameter is specified, then the pcrn1 and pcrn2 parameters cannot be specified.
Recovery
Display the settings for the link. Enter the rtrv-slk 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 assistance.