VMS Help SET, FILE, Qualifiers, /CREATED  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /CREATED (default)

    Modifies the time value specified with the /BEFORE or the /SINCE
    qualifier. The /CREATED qualifier selects files based on their
    dates of creation. This qualifier is incompatible with the
    /MODIFIED qualifier, which also allows you to select files
    according to time attributes. The /CREATED qualifier is the
    default qualifier.