title: Sharepoint Online Rest Query with $expand generating 400 bad request
body: <p>I have 2 sharepoint lists setup to represent different groups(circles) and the users that are apart of those groups(circles).</p>
  <blockquote>
  <p><strong>List</strong>: Circles <strong>Columns</strong>: Circle(single line of text)</p>
  <p><strong>List</strong>: UserCircles <strong>Columns</strong>: UserName(person lookup), UserCirlce(lookup to Circle list)</p>
  </blockquote>
  <p>In the setup, all of the columns are their own columns (I have not renamed the title column to Circle or anything like that). I have not changed the display names of the lists.</p>
  <p>When I try to run an REST GET against the UserCircles list and retrieve the projected values from the Circles list as below:</p>
  <pre><code>/_api/web/lists/getbytitle('UserCircles')/items?$select=Circles/Circle&amp;$expand=Circles
  </code></pre>
  <p>I get a HTTP 400 Error and the message:
  <em><strong>The field or property 'Circles' does not exist</strong></em></p>
  <p>I can successfully run a query against the UserName field (I assume that's the referenced field), by running the below query:</p>
  <pre><code>/_api/web/lists/getbytitle('UserCircles')/items?$select=Author/Title&amp;$expand=Author
  </code></pre>
  <p>I am not sure why the query cannot find the list specified.  I have verified all of the list names.  Any guidance would be appreciated.</p>