CBR5823I SCSI adapter function already in progress when trying to use drive drive-name.
Explanation
An I/O error has occurred on optical disk drive drive-name. The host adapter returned a return code of X'04', indicating that the previous command has not completed, or a return code of X'05' indicating a data transfer to any device is not complete.
System action
The I/O operation is stopped.
Operator response
Notify the service representative.
System programmer response
For information on host adapter error codes, consult RT SCSI Adapter Device Driver Table. Obtain the logrec data set error record.
Source
Object Access Method (OAM)
Routing Code
4
Descriptor Code
4