AB-4005 message_expired
| Class | Delivery |
| HTTP status | 410 |
| Retryable | no |
When it happens
Publish with expires_at in the past, or GET of an envelope that expired before delivery.
Hint
expires_atis already past. Set a future expiry or omit it.
Troubleshooting
Run agentbus doctor and agentbus trace <message_id>; include the trace_id when asking for support.