On the wire
Ships with HTTP status 409, carrying "code": "RU-3009" in the response body alongside the human-readable error message. Existing fields are never replaced by the code: it is additive.
Common causes
- Re-creating a channel that already exists instead of updating it.
How to fix it
- Choose a different name, or update the existing channel with PATCH /notification-channels/:id.
Related codes
- RU-3007: Invalid notification channel request
Still stuck?
Ask support and mention RU-3009: the code pins down the exact refusal path, so you skip the diagnostic back-and-forth.