Library /sys$common/syshlp/dbg$help.hlb DEBUG, Messages, SYNCDONE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 vector synchronization complete

    Facility: DEBUG, VMS Debugger

    Explanation: This signal is generated by the debugger kernel
    after it has executed the synchronization instruction(s)
    necessary to insure that all vector exceptions have been
    reported.

    User Action: Submit an SPR. This message is handled internally,
    and should never be signaled to the user.