VMS Help ACCOUNTING, /UIC, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The /UIC qualifier uses the value of the UIC field to select
    records for processing. This field is present in all records
    except file backward link and file forward link records. It
    contains the value [SYSTEM] for login failure records where the
    user did not give a valid user name.

    The /UIC qualifier selects only records that have the specified
    values in the UIC field. If you precede the values with a minus
    sign, it selects all records except those with the specified
    values.

    You can specify the UIC in numeric or alphanumeric format, and
    can use the asterisk (*)  wildcard character.