E4057 Cmd Rej: All signaling links serviced by this E1/T1 must be deleted
All signaling links that are serviced by the E1 or T1 interface must be deleted before the interface can be deleted.
Recovery
Display the signaling links assigned to the E1 or T1 interface. Enter the rtrv-slk command.
Deactivate and delete all of the signaling links assigned to the E1 or T1 interface. Refer to the Database Administration - SS7 User's Guide for assistance.
Re-enter the command that generated this error message.