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

    LBR messages (prefaced by an NCS message) might signal errors
    detected while the process is accessing the NCS library.
    Any value signaled by STR$COPY_DX or STR$ANALYZE_SDESC.