By using this trigger, you can respond to your custom API events.
You can select a resource by double-clicking the External Event trigger node.
Important:
- The payload size limit of External events is changing:
We are introducing a limit of 500 KB for the payload size of External events effective July 1, 2023. Events exceeding this limit will not be accepted and you will receive an error response from the API. As a result, External events over the limit will not trigger any Triggered Email campaigns, Automation Center or Interactions programs.
- An Interactions program will only be triggered if the size of event data for the given event is below 20 kB. The API call will not trigger the Interactions program even if you get the
200 OK
response.
You can filter External events based on the time when they were received by Interactions with the ems_event_time
attribute.

Copying the External Event ID
You can copy the External Event ID as follows:
After you selected an external event, its External Event ID is displayed that you can copy by clicking the Copy ID icon. This comes in handy when you need to paste the External Event ID into your external system.
