This documentation is for WSO2 Enterprise Integrator version 6.1.1 . View documentation for the latest release.

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In the following sample configuration, the Header Mediator is used to add the action, the PayloadFactory Mediator is used to store the the request message and the Call mediator is used to invoke a backend service.
You will see that the payload of the request and header action are sent to the backend. After successful backend service invocation, you will see that the response of the service is retrieved by the EI and sent to the client as the response using the Respond Mediator.