E5469 Cmd Rej: MAPSET is being referred by GTT Table entities
If the MAP set is referenced in the GTT table without an associated point code and subsystem number, then the MAP set cannot be deleted.
Recovery
Display the entries in the GTT table. Enter the rtrv-gta command, specifying a valid combination of parameters. Refer to the command description in Commands User's Guide for assistance.
Revise the data as necessary. Refer to the Database Administration - GTT User's Guide for assistance.
Re-enter the dlt-map command that generated this error message.