title: Unmatched events on Event Grid
body: <p>I have a Logic App that sets up a subscriptions in Event Grid with the Wait for resource event occurs trigger. </p>
  
  <p>Basically the logic app is triggered by a http request - sends a message on service bus - register subscription and wait for event. I have a custom service that publishes the event to event grid. </p>
  
  <p>Most of the times this works well but from time to time the event is not received by the logic app. When that happens I get an "unmatched" event in event grid. </p>
  
  <p>As a test I have added code in my event publishing service to retrieve all subscriptions from Event Grid and dump it to a log file before I publish the event, and I can see that the subscription is there and have a state of "Succeeded". </p>
  
  <p>I have done these tests without any filters. </p>
  
  <p>Any ideas what to do?</p>