Errors detected when using AUDIT DIRECTORYCONTROLS for a tape volume

For each volume record indicating a tape migration volume, AUDIT makes the following checks:

If no TTOC base record exists, AUDIT reports *ERR 17.
When the TTOC exists, AUDIT makes the following checks for each valid data set entry in that TTOC:
- If there is a catalog entry indicating a migrated data set, but no data set record in the MCDS, AUDIT reports *ERR 113.
- If there is a catalog entry indicating a migrated data set, and a data set record indicating a valid migration copy on some other volume:
  - If the data set record indicates that other volume is a tape, but there is no TTOC base record for that other volume; or
  - If the data set record indicates that other volume is a DASD volume, but its VTOC has no DSCB for the migration copy
  AUDIT reports *ERR 115.
If a TTOC entry is not flagged as valid, but has an alias record in the MCDS, AUDIT reports *ERR 114.

For each volume record indicating a tape backup volume, AUDIT makes the following checks:

If no TTOC base record exists, AUDIT reports *ERR 17.
When the TTOC exists, AUDIT makes the following checks for each valid data set entry in that TTOC:
- If, in the BCDS, a backup version record exists, but
  - No data set record exists; or
  - The existing data set record does not refer to the backup version record
  AUDIT reports *ERR 116.
- If the TTOC entry indicates either a VTOC or VCAT copy data set for a given volume:
  - If there is no eligible volume record for that volume, AUDIT reports *ERR 117
  - If the existing eligible volume record does not refer to the VTOC or VCAT copy we started from, AUDIT reports *ERR 118.
If a TTOC entry is not flagged as valid, but has a backup version record in the BCDS, AUDIT reports *ERR 116.

For either a migration or backup volume, AUDIT makes the following checks, after finding the base TTOC record:

If the alternate volume serials for duplex volumes do not match between the TTOC and either the MCT or MCV, AUDIT reports *ERR 58.
If one or more TTOC extension records are missing from the TTOC set, AUDIT reports *ERR 111.
If there is an extraneous TTOC extension record, AUDIT reports *ERR 112.
When the TTOC base record indicates the first entry, either a migrated data set or a backup version continues (spans) from another tape volume, referred to as the predecessor volume
- If the data set entry is INVALID, AUDIT reports *ERR 125.
- If there is no TTOC for the predecessor volume and the data set entry is VALID, AUDIT reports *ERR 119.
- If the TTOC for the predecessor volume is found, but does not indicate the volume being audited as a successor, and the data set entry is VALID, AUDIT reports *ERR 120.
- If the last data set in the predecessor's TTOC is not the same dsname as the first data set in the TTOC of the volume being audited, AUDIT reports *ERR 121.
When the TTOC base record indicates the last entry, either a migrated data set or a backup version continues (spans) to another tape volume, referred to as the successor volume
- If the data set entry is INVALID, AUDIT reports *ERR 125.
- If there is no TTOC for the successor volume and the data set entry is VALID, AUDIT reports *ERR 122.
- If the TTOC for the successor volume is found, but does not indicate the volume being audited as a predecessor, and the data set entry is VALID, AUDIT reports *ERR 123.
- If the first data set in the successor's TTOC is not the same dsname as the last data set in the TTOC of the volume being audited, AUDIT reports *ERR 124.
If the total valid block count, as determined by the AUDIT function, differs from the value currently reflected in the in the base TTOC record, the AUDIT function corrects the total valid block count in the base TTOC record. This correction can also occur in predecessor or successor TTOC base records.