title: Match facebook campaign objective with insights actions types
body: <p>Facebook campaigns have an objective among <a href="https://developers.facebook.com/docs/marketing-api/reference/ad-campaign-group#Creating" rel="noreferrer">those listed here</a> (<code>PAGE_LIKES</code>, <code>VIDEO_VIEWS</code>, etc).</p>
  
  <p>Facebook insights list users actions among <a href="https://developers.facebook.com/docs/marketing-api/action-specs/v2.5" rel="noreferrer">those listed here</a> (<code>like</code>, <code>video_view</code>, etc, but some are missing, <code>unlike</code> for example).</p>
  
  <p>The problem is: objective and actions do not match.
  For example, there is a <code>PAGE_LIKES</code> objective and a <code>like</code> action.</p>
  
  <p>In the <a href="https://business.facebook.com/ads/manage/powereditor" rel="noreferrer">facebook power manager</a> there is a "Results" column which gives, for each campaign, the user actions count that match the campaign objective (<em>992 <code>like</code> obtained in the picture below</em>).</p>
  
  <p><a href="https://i.stack.imgur.com/Lmcutm.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Lmcutm.png" alt="Power Manager"></a></p>
  
  <p>It seems that there is no such things <a href="https://developers.facebook.com/docs/marketing-api/reference/ad-campaign-group/insights/" rel="noreferrer">in the insights</a> (<em>neither in the api nor in the sdk</em>), so what is the proper way to identify a campaign conversion count (<em>named "Results" in the power manager</em>)?</p>
  
  <p>Do we have to manually maintain <code>PAGE_LIKES &lt;-&gt; like</code>? And if it so, what is the correct mapping?</p>