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

 subscript out of range, low/high bound for dimension subscript_
 number is subscript_bound

    Facility: DEBUG, VMS Debugger

    Explanation: The subscript specification is not within the bounds
    of the array.

    User Action: Reenter the command, specifying a subscript
    specification that is within the bounds defined for the array.