SS$_NORMAL         Normal successful completion.
    LIB$_INVARG        Invalid argument. A bit in the flags parameter
                       was set without an associated qualifier.
    CLI$_INVQUAVAL     An unusable value was given on the command
                       line for any of the following qualifiers:
                       /EXCLUDE, /BEFORE, /SINCE, or /BY_OWNER (for
                       example, /BEFORE=mintchip).
    SS$_CONFQUAL       More than one of the following appeared on
                       the command line at the same time: /CREATED,
                       /MODIFIED, /EXPIRED, /BACKUP.

    Any unsuccessful return from LIB$GET_VM.