根据使用情况考虑使用以下解决方案：

1.确保WSDL包含正确的消息格式并与动态请求方法匹配。可以通过使用SOAPUI等工具进行测试来进行验证。

2.如果动态请求方法具有多个参数，则可以使用以下示例代码构建请求主体：

// 创建SOAP请求
SOAPMessage soapMessage = MessageFactory.newInstance().createMessage();
SOAPEnvelope soapEnvelope = soapMessage.getSOAPPart().getEnvelope();
SOAPHeader soapHeader = soapEnvelope.getHeader();
SOAPBody soapBody = soapEnvelope.getBody();

// 创建请求参数
SOAPElement requestElement = soapBody.addChildElement("request");
SOAPElement param1Element = requestElement.addChildElement("param1");
param1Element.setTextContent("value1");
SOAPElement param2Element = requestElement.addChildElement("param2");
param2Element.setTextContent("value2");

// 发送请求
String endpointUrl = "http://example.com/service";
SOAPConnectionFactory soapConnectionFactory = SOAPConnectionFactory.newInstance();
SOAPConnection soapConnection = soapConnectionFactory.createConnection();
SOAPMessage soapResponse = soapConnection.call(soapMessage, endpointUrl);

3.检查WSDL是否已更新，并相应地更新客户端代码。

4.如果以上步骤都没有解决问题，则可以尝试手动构建SOAP请求和响应。以下示例代码为使用HttpsURLConnection构建的SOAP请求和处理SOAP响应：

// 创建请求主体
String requestBody = "value1value2";

// 发送请求
String endpointUrl = "http://example.com/service";
URL url = new URL(endpointUrl);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/xml");
connection.setDoOutput(true);
OutputStream outputStream = connection.getOutputStream();
outputStream.write(requestBody.getBytes());
outputStream.flush();
outputStream.close();

// 处理响应
InputStream inputStream = connection.getInputStream();
SOAPMessage soapMessage = MessageFactory.newInstance().createMessage(null, inputStream);

5.最后，如果问题仍然存在，则可以联系服务提供商以获取帮助和支持。