wbhk
failedNotification
Sent when a message you sent failed to be delivered by the channel. eventType is NOTIFICATION and notificationType is FAILED.
The callback carries the FAILED status and the correlating outboundId so you can identify which message could not be delivered. This is distinct from outboundFailureNotification, which fires when Enrich could not submit the message to the channel at all.
200Callback acknowledged.
4XXPermanent failure. Enrich will not retry.
5XXTransient failure. Enrich retries up to 4 times, 5s apart.