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

 cannot watch protected address address_value

    Facility: DEBUG, VMS Debugger

    Explanation: A SET WATCH command specified a protected address.
    Note that you cannot place a watchpoint on a dynamically
    allocated variable because these variables are stored on the
    stack.

    User Action: Do not use watchpoint on this address.