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

  Subscript out of range (ERR=55)

  The program attempts to reference an  array  element  outside  of  the
  array's DIMENSIONed bounds.  Check program logic to make sure that all
  array references are to elements within the array boundaries.