private   void  testServiceRequest(String service){
         try {
            DocumentBuilderFactory factory= DocumentBuilderFactory.newInstance();
            DocumentBuilder builder=factory.newDocumentBuilder();
            ByteArrayInputStream stream= new  ByteArrayInputStream(service.getBytes());
            builder.parse(stream);
        } catch (Exception e){
            setError(getError() + "Parametr ServiceRequest not XML formatted.\n");
            setError(getError()+ e.getMessage()+"\n");
            validateOK=false;
        }
    }