Add FAQ for data not reaching destination

Author: bobbyatsegment

src/connections/destinations/actions.md

@@ -187,6 +187,10 @@ You can combine criteria in a single group using **ALL** or **ANY**.  Use an ANY
 
 When you send an event with an actions destination Event Tester that doesn't match the trigger of any configured and enabled mappings, you'll see an error message that states, *You may not have any subscriptions that match this event.* To resolve the error, create a mapping with a trigger to handle the event being tested, or update the test event's payload to match the trigger of any existing mappings. 
 
+### Data not sending downstream
+
+Ensure that at least one mapping has been configured and enabled in the destination mappings for an event that you would like to reach downstream. If no mappings are enabled to trigger on an event that has been received from the connected source, the destination will not send any events.
+
 ### Multiple mappings triggered by the same event
 
 When the same event triggers multiple mappings, a request will be generated for each mapping that's configured to trigger on an event. For example, for the *Subscription Updated* event, if two mappings are enabled and both have conditions defined to trigger on the *Subscription Updated* event, the two requests will be generated and sent to the destination for each *Subscription Updated* event.