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

 value is subscript_value, bounds are low_bound..high_bound

    Facility: DEBUG, VMS Debugger

    Explanation: An attempt to subscript out of the bounds of an
    array was made.

    User Action: Change the value of the subscript.