I am getting the below error when I am trying to hit the webservice using SOAP-UI

No adapter for endpoint [public api.siperian.CleanseResponse com.asp.webservices.endpoints.AddressEndpoint.clea nse(api.siperian.CleanseRequest)]: Is your endpoint annotated with @Endpoint, or does it implement a supported interface like MessageHandler or PayloadEndpoint?

What does this error mean,I have copied the working example and modified the code accordingly.Do I need to implement a JAXB Object Response for the endpoint method?Is it mandatory?Is it a defect in the spring webservices?I am using the latest Spring Webservices Jar files. Please help.