static String createRejectsResponse(final RequestResult[] requestResults) {

    final StringBuilder sb = new StringBuilder();
    sb.append(XML_HEADER);
    sb.append("<rjcts>"); // $NON-NLS-1$
    for (final RequestResult rr : requestResults) {
      sb.append("<rjct id=\"")
          .append(rr.getId()) // $NON-NLS-1$
          .append("\" status=\"")
          .append(rr.isStatusOk() ? "OK" : "KO") // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
          .append("\"/>"); // $NON-NLS-1$
    }
    sb.append("</rjcts>"); // $NON-NLS-1$

    return sb.toString();
  }