title: Adding FaultRule to ServiceCallout
body: <p>I have been trying to make sense of the Apigee Guide on Fault Handling (<a href="http://apigee.com/docs/api-services/content/fault-handling" rel="nofollow">http://apigee.com/docs/api-services/content/fault-handling</a>) but it is not making sense to me.</p>
  
  <p>The following request can result in a 404 error from the target server. How do I correctly catch this fault? </p>
  
  <pre><code>&lt;ServiceCallout async="false" continueOnError="false" enabled="true" name="CalloutSessionSignIn"&gt;
    &lt;Request variable="SignInRequest"/&gt;
    &lt;Response&gt;SignInResponse&lt;/Response&gt;
    &lt;HTTPTargetConnection&gt;
      &lt;URL&gt;http://localhost/{service_name}/{request.formparam.session_id}/signin&lt;/URL&gt;
    &lt;/HTTPTargetConnection&gt;
  </code></pre>
  
  <p></p>