Notes on one-way operations

For Provider Implementation Class, if null is returned, the HTTP response as an HTTP status code 202 Accepted is returned after the method invocation is complete.
The one-way operations are not supported when you use the WSS (Web Services-Security), the WS-RM 1.2 functionality, or addressing functionality. The operation is guaranteed only when you individually use the WSS (Web Services-Security), the WS-RM 1.2 functionality, or addressing functionality.
The one-way operations have no corresponding SOAP messages. Therefore, you must take care that the exceptions are not thrown explicitly when implementing a method of the one-way operation of Web Services Implementation Class.
If the service-side JAX-WS engine receives an invalid SOAP message and the unmarshalling fails, the engine sends the SOAP fault, the HTTP status code of which is set as 500 Internal Server Error, to the Web Services client.
If the Web Services client that uses a one-way operation receives an HTTP status code other than 200 OK or 202 Accepted, the Web Services client throws the javax.xml.ws.WebServiceException exception.