Library /sys$common/syshlp/basichelp.hlb Run time errors, FIEOVEBUF  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  FIELD overflows buffer (ERR=63)

  A FIELD statement attempts to access more  data  than  exists  in  the
  specified  buffer.   Change  the FIELD statement to match the buffer's
  size or increase the buffer's size.