91304: Internal error, delivery retried

Twilio records this error when Data Destinations hits a transient internal condition while preparing an event for delivery.

The event is not dropped. Twilio retries delivery automatically according to the retry policy on your destination, and in most cases the event is delivered on a subsequent attempt. No action is required unless the condition persists.

• Twilio could not read the destination's configuration at delivery time.
• Converting the event for the destination exceeded its internal time limit.

• No action is required if the event is delivered on a subsequent attempt.
• If events remain undelivered after the retry window, contact Twilio Support and include the destination SID, subscription SID, event type, and the time window of the affected events.

• 91303: Event dropped due to an internal error

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