A subsystem request from either EDGHSKP or EDGBKUP has ended with an unexpected return code. When you request inventory management functions other than BACKUP, EDGHSKP uses a subsystem request to initiate the functions you request. During backup processing, the DFSMSrmm subsystem must be notified that backup is in progress and is completed. The DFSMSrmm subsystem has responded with a return code indicating the error is not known.