DSNJ409I UNABLE TO WRITE ACTIVE LOG RECORD TO THE BSDS DATASET. DDNAME=xxxxxx

Explanation
 A program encountered an I/O error when attempting
to write a BSDS active log record to the BSDS data set. 'xxxxxx' is
the DDNAME of the BSDS data set being accessed.

System action
 The program will terminate.

Operator response
 Notify the system programmer.

System programmer response
 One or more error messages describing
the specific error preceded this message. This error is considered
unrecoverable and will leave the BSDS data set in an uncertain state.
It will be necessary to either: re-create the data set using access
method service routines and then use change log inventory (DSNJU003)
to make the active and archive log data set(s) known to the BSDS,
or recover the BSDS using a backup copy.