<str>.<str> is not supported in this context

  Explanation:  You included the COMPUTED_BY field named  in  this
  error  message  in the SELECT FIELDS clause of a DEFINE TRANSFER
  statement.  This COMPUTED_BY field uses a value expression  that
  is unsupported.

  User Action:  Reenter the DEFINE TRANSFER statement and omit the
  COMPUTED_BY  field  that  uses the unsupported value expression.
  Refer to the DEFINE TRANSFER statement in the Replication Option
  for  Rdb  Handbook for information on what value expressions are
  supported.