On the wire
Ships with HTTP status 404, carrying "code": "RU-4013" in the response body alongside the human-readable error message. Existing fields are never replaced by the code: it is additive.
Common causes
- The token was rotated or revoked under the errors project's settings and the deploy platform still has the old URL.
- The URL was copied incompletely into Vercel's webhook configuration.
How to fix it
- Compare the token prefix shown in the project's settings with the URL configured in Vercel.
- If it was rotated, paste the new URL into Vercel's webhook settings; the old one stops working the moment a new one is minted.
Related codes
Still stuck?
Ask support and mention RU-4013: the code pins down the exact refusal path, so you skip the diagnostic back-and-forth.