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

 the /EVENT qualifier is not allowed: first type 'SET EVENT facility'
 to specify an event facility

    Facility: DEBUG, VMS Debugger

    Explanation: No event facility has been set up yet, therefore
    no events which use an event facility can be set, canceled, or
    displayed.

    User Action: Set an event facility, and try the operation again.