# invalid_client_metadata

> OAuth (Sign in with Tickwire): the dynamic client registration request is not acceptable.

Source: https://tickwire.io/docs/errors/invalid_client_metadata/

HTTP 400.

**Likely causes:**

- The body is not a JSON object.
- Unsupported grant_types, response_types or token_endpoint_auth_method.

**What to do:** Register with response_types ["code"], grant_types authorization_code (+ refresh_token), and auth method none, client_secret_post or client_secret_basic.

**Retry:** No. The same request gets the same answer; change something first.

Listed under [Sign in with Tickwire (OAuth)](https://tickwire.io/docs/errors/#sign-in-with-tickwire-oauth) in [Errors](https://tickwire.io/docs/errors/). Send the error's `requestId` to support and we can find the request.