Ошибка java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.ElementNSImpl cannot be cast to org.apache.xerces.dom.ElementNSImpl

public static Valute getValuteByValuteCh(String valuteCh, GetCursOnDateXMLResult result) throws Exception{
    Valute answer = new Valute();
    List<Object> list = result.getContent();
    ElementNSImpl e = (ElementNSImpl) list.get(0);
    NodeList chCodeList =   e.getElementsByTagName("VchCode");
    int length = chCodeList.getLength();
    boolean isFound = false;
    for (int i = 0; i< length; i++){
        if (isFound) break;
        Node valuteChNode = chCodeList.item(i);
        TextImpl textimpl = (TextImpl)valuteChNode.getFirstChild();
        String chVal = textimpl.getData();
        if (chVal.equalsIgnoreCase(valuteCh)){
            isFound = true;
            Node parent = valuteChNode.getParentNode();
            NodeList nodeList = parent.getChildNodes();
            int paramLength = nodeList.getLength();
            for (int j=0; j<paramLength; j++){
                Node currentNode = nodeList.item(j);
                String name = currentNode.getNodeName();
                Node currentValue = currentNode.getFirstChild();
                String value = currentValue.getNodeValue();
                if (name.equalsIgnoreCase("Vname")){
                    answer.name = value;
                }
                if (name.equalsIgnoreCase("Vnom")){
                    answer.nom = new BigDecimal(value);
                }
                if (name.equalsIgnoreCase("Vcurs")){
                    answer.curs = new BigDecimal(value);
                }
                if (name.equalsIgnoreCase("Vcode")){
                    answer.code = Integer.parseInt(value);
                }
                if (name.equalsIgnoreCase("VchCode")){
                    answer.chCode = value;
                }
            }
        }
    }
    return answer;
}

Метод парсит XML ответ веб-сервиса цбрф Используется библиотека Xerces При запуске приложения на сервере возникает ошибка на строку ElementNSImpl e = (ElementNSImpl) list.get(0);

java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.ElementNSImpl cannot be cast to org.apache.xerces.dom.ElementImpl at com.naitos.WSUsing.GetCursOnDateResultParser.getValuteByValuteCh(GetCursOnDateResultParser.java:44)