VMS Help DECTPU, TPU$FILE_SEARCH, Condition Values Returned  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    TPU$_SUCCESS       Normal successful completion. If the return
                       string contains a null string, the final match
                       operation was detected.
    TPU$_INCKWDCOM     The flags argument had an illegal combination
                       of values.
    TPU$_PARSEFAIL     The requested repeat parse failed.
    TPU$_SEARCHFAIL    An error occurred during the search operation.