The data set was not serialized when it was dumped because the Backup-While-Open (BWO) status in the VVDS indicated that this data set could be dumped without serialization by DFSMSdss if it was already serialized.
Processing continues. If this message was unexpected, the Backup-While-Open (BWO) status have been incorrectly set or left set by an application.
None.
Forward recovery be required to use this data set.