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

 no write access to address address_value

    Facility: DEBUG, VMS Debugger

    Explanation: A DEPOSIT, SET BREAK, or SET TRACE command specified
    the address address_value. The debugger does not have write
    access to that page. The debugger requires write access in order
    to be able to set up breakpoints and tracepoints.

    User Action: None. You cannot do the requested operation without
    proper access.