Platform Events Developer Guide

Platform Events Developer Guide
Delivering Custom Notifications with Platform Events
Defining Your Custom Platform Event
Publishing Platform Events
Subscribing to Platform Events
Set Up Debug Logs
Processes
Flows
Apex Triggers
Process Platform Event Messages in Smaller Batches in Apex Triggers
Retry Event Triggers with EventBus.RetryableException
Email Notifications for Triggers in Error State
Comparing setResumeCheckpoint() and EventBus.RetryableException
Lightning Components
CometD
Obtain a Platform Event’s Subscribers
Testing Your Platform Event in Apex
Encrypting Platform Event Messages at Rest in the Event Bus
Considerations
Examples
Reference
PDF

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Email Notifications for Triggers in Error State

When an Apex platform event trigger exceeds the maximum number of retries and is in the error state, you are emailed a notification. To resume processing of new event messages, fix and save the trigger. Event messages sent while the trigger is stopped are missed and can’t be processed again.

The email notification is not sent for general unhandled exceptions, such as uncatchable limit exceptions. Unlike Apex object triggers, platform event triggers don’t generate exception emails for unhandled exceptions.

For a platform event trigger in the error state, the notification is sent to the developer specified in the trigger’s Last Modified By field. To also send the email to other users, add them on the Apex Exception Email page in Setup. The recipients specified on the Apex Exception Email page also apply to emails sent for Apex object triggers and classes.

To set up more recipients:
  1. From Setup, enter Apex Exception Email in the Quick Find box.
  2. Select Apex Exception Email.

The users and email addresses entered apply to all managed packages in the customer's org. You can also configure Apex exception emails using the Tooling API object ApexEmailNotification.