# authorization_unavailable

> The Tickwire sign-in service could not check the access token right now.

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

HTTP 503. Nothing reached the broker.

**Likely cause:** The sign-in service answered with an unexpected error.

**What to do:** Retry after a few seconds. If it keeps happening, sign in again from the AI app.

**Retry:** Yes. Nothing happened (or it was a read), so repeat it, after `Retry-After` when present.

Listed under [Outages and timeouts](https://tickwire.io/docs/errors/#outages-and-timeouts) in [Errors](https://tickwire.io/docs/errors/). Send the error's `requestId` to support and we can find the request.