Description

   The VERIFY command performs a series of consistency checks on
   your library. If you issue VERIFY under normal conditions, the
   command executes successfully, indicating that the information
   in your library is correct. However, if the data in the library
   is invalid, the command returns an error message indicating that
   there is an error in the verification of the library. You can
   use the /RECOVER and /REPAIR qualifiers on the VERIFY command to
   correct some of the errors discovered by VERIFY.

   Recovery and repair transactions are marked as unusual occurrences
   in the library history.