What it means
an active delivery/retry prevents manual replay.
How to handle it
Wait for the active webhook delivery or retry to finish before requesting a manual replay.
Wire contract
| Code | delivery_in_progress |
|---|---|
| Class | conflict |
| HTTP status | 409 |
| Meta keys | None |
| Raised | Yes |
The response uses the standard {"error": {…}} envelope. Branch on error.code, not the human-readable message. Preserve request_id when reporting a failure.