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

 invalid numeric string 'number_value'

    Facility: DEBUG, VMS Debugger

    Explanation: A numeric value which was not in the specified radix
    was found in the language expression.

    User Action: Enter numbers specifying only valid digits for that
    radix.