title: WSO2 REST to SOAP passing operation parameters
body: <p>Using WSO2 ESB 4.8.1, I have configured a WSDL proxy that I want to access over REST. the proxy points to the SOAP WSDL URI and has publish WSDL turned on. This seem to work fine and I can see the service and its various operations in the WSO2 admin UI. Likewise if I go to localhost:8280/services/</p>
  
  <p>The questions is how do I pass operation specific parameters when accessing over   HTTP REST?</p>
  
  <p>Let's say my FooService OperationX expects a "p1" parameter, can I pass this directly when accessing localhost:8280/services/FooService/OperationX in a browser?</p>
  
  <p>I tried for example localhost:8280/services/FooService/SomeOperation?p1=somevalue, but always get a validation error that the required parameter is missing:</p>
  
  <pre><code>cvc-complex-type.2.4.b: The content of element 'axis2ns15:OperationXRequest' is not complete. One of '{"somenamespace":p1}' is expected.
  </code></pre>
  
  <p>Can this be supported by a basic WSDL proxy? Or do I need to use the API?</p>