Either the Backup-While-Open (BWO) status or the data set was changed while the data set was being dumped.

For example, a CI or CA split have occurred, or the data set have been extended. The version of the data set on the dump data set (tape or DASD) is not usable.

A status of '***' indicates that DFSMSdss could not obtain the BWO status bits at the end of the dump. See Appendix B, "Data Integrity—Serialization", in z/OS DFSMSdfp Storage Administration for more details about the BWO status indicators.