Given an indication of a tape backup volume, AUDIT uses the backup category in the backup volume record to read the tape table of contents (TTOC) records for the volume. Those TTOC records drive the audit for that volume.
For each valid data set entry in the TTOC, AUDIT tries to read a backup version record from the BCDS. If such a record exists, but none of the volumes (including any spanned volumes) indicated in that record is the same as the volume being audited, AUDIT reports *ERR 14.