155.2.3 DELETE-RCSU

A recorder which is in the ready state cannot be deleted unless deactivated by AMO DSSU. When a recorder is to be deleted, it should be deactivated immediate (DEA-DSSU:DI,...).
To determine the status of the recorder, use AMO SDSU
(DIS-SDSU:,,PEN,PER3,<LTG>,<LTU>,<SLOT>,<CIRC>;).