title: Resource not found for segment 'Property'
body: <p>When using ADO.Net Data Services client to refresh an entity by calling the <code>LoadProperty</code>:</p>
  
  <pre><code>ctx.BeginLoadProperty(this, "Owner", (IAsyncResult ar) =&gt; ...
  </code></pre>
  
  <p>It throws an error on the server if the property is <code>null</code></p>
  
  <blockquote>
    <p>Error: Exception Thrown: System.Data.Services.DataServiceException:
    Resource not found for the segment 'Owner'.    at
    System.Data.Services.RequestDescription.GetSingleResultFromEnumerable(SegmentInfo
    segmentInfo)    at
    System.Data.Services.DataService1.CompareETagAndWriteResponse(RequestDescription
    description, ContentFormat responseFormat, IDataService dataService)<br>
    at
    System.Data.Services.DataService1.SerializeResponseBody(RequestDescription
    description, IDataService dataService)    at
    System.Data.Services.DataService1.HandleNonBatchRequest(RequestDescription
    description)    at System.Data.Services.DataService`1.HandleRequest()</p>
  </blockquote>
  
  <p>Problem is that the client does not know whether the property is <code>null</code> or just hasn't been populated yet.  The property Owner is a link from a <code>Vehicle</code> to a <code>Customer</code>.</p>
  
  <p>Any ideas what's wrong?</p>
  
  <p>Thanks</p>