title: Enable server notifications for auto-renewable subscriptions
body: <p>As per <a href="https://help.apple.com/itunes-connect/developer/#/dev0067a330b" rel="nofollow noreferrer">this</a> documentation<br></p>
  
  <p>A server URL to receive update notifications (JSON object posts) for key subscription events. This is applicable only for apps containing auto-renewable subscriptions. It is recommended to use these notifications in conjunction with Receipt Validation to validate users' current subscription status and provide them with service</p>
  
  <p><a href="https://i.stack.imgur.com/8os5L.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8os5L.png" alt="enter image description here"></a></p>
  
  <p>We have added the URL but while checking the server log the link is not pinged,<br>
  Q1 - Is there any additional setup I need to do to test it in the sandbox?<br>
  Q2 - Is it only work for real purchase made by the user on production?<br>
  Q3 - Should I need to push an update to app store to make the Subscription URL work?</p>
  
  <p>Any suggestion will be helpfull</p>