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

 parenthesis required around process list in debug_command

    Facility: DEBUG, VMS Debugger

    Explanation: Parentheses must be placed around the process
    list for debugger commands SET/PROCESS=(process-list) or
    DO/PROCESS=(process-list).

    User Action: Place parentheses around the process list in the
    command.