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

 operator 'operator_symbol' not allowed on given data types

    Facility: DEBUG, VMS Debugger

    Explanation: The debugger encountered a problem when performing
    the operation '<operator_symbol, !AC>' on the specified operands.
    This may be a data type conversion error.

    User Action: Reenter the command, specifying compatible operands.