E2568 Cmd Rej: Screen set name is referenced by a link set
A screen set that is assigned to a linkset cannot be deleted.
Recovery
Display the linkset information. Enter the rtrv-ls command.
Screen set information is shown under the SCRN heading.
Delete the screen set information from the linkset as necessary. Refer to the Database Administration - SS7 User's Guide and to the Database Administration - GWS User's Guide for assistance.
Re-enter the dlt-scrset command that generated this error message.