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

    LBR$_NORMAL        Normal exit from the routine.
    LBR$_EMPTYHIST     History empty. This is an informational code,
                       not an error code.
    LBR$_INTRNLERR     Internal Librarian routine error occurred.
    LBR$_NOHISTORY     No update history. This is an informational
                       code, not an error code.