title: Soap Error: "Server was unable to process request" "Object reference not set to an instance of an object"
body: <p>When I send a SOAP request to my service in the IIS locally, everything works fine.
  When I send a SOAP request to the same service that running on IIS on another host, everything works fine.</p>
  
  <p>But when another programmer sends a SOAP request to my service, he generally gets the right response except one method in the service that returns:</p>
  
  <pre><code>&lt;soap:Body&gt;
  &lt;soap:Fault&gt;
    &lt;faultcode&gt;soap:Server&lt;/faultcode&gt;
    &lt;faultstring&gt;Server was unable to process request. ---&amp;gt; Object reference not set to an instance of an object.&lt;/faultstring&gt;
    &lt;detail /&gt;
  &lt;/soap:Fault&gt;
  </code></pre>
  
  <p></p>
  
  <p>I need to understand why he is receiving this error.</p>
  
  <p>His SOAP request is exactly the same as SOAP Request yet mine works and his does not.</p>