title: return oracle service bus error code
body: <p>I'm creating a proxy in Oracle Service Bus 11G for a webservice. After receiving the request and when the response is 200, everything is ok, the OSB return the same 200 code.</p>
  
  <p>Now, in my WebService I raise error 400, 406, 403, etc. depending of some logic processing but the OSB always raise error 500.</p>
  
  <p>There's a way to make OSB forward the plain answer including the error code?</p>
  
  <p>Thank you.</p>