SUBSTRING  function  not  available  in  RDO   -   ignored   for
  <str>.<str>

  Explanation:  This definition  cannot  be  represented  in  RDO,
  because RDO does not support the SUBSTRING function.

  User Action:  You may decide to alter the definition so that  it
  can  be  represented in RDO or use the Language=SQL qualifier of
  the RMU Extract command to extract the definition.