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

 mask/target subscripts do not match, displaying mask

    Facility: DEBUG, VMS Debugger

    Explanation: The subscript values for the supplied mask value
    are different then the subscript values for the target value. To
    minimize confusion, Debug is showing the mask values as well as
    the target values.

    User Action: None, this message is informational.