# invalid_url

> The webhook URL is not allowed. The message is the same whatever rule refused it.

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

HTTP 400.

**Likely causes:**

- Not https://.
- The host is localhost, *.localhost, *.internal or *.local, or the URL carries a username or password.
- The host is, or resolves to, a non-public address (loopback, private, link-local, carrier-grade NAT, multicast, reserved), or cannot be resolved.
- Re-enabling an endpoint whose URL breaks these rules.

**What to do:** Use an https URL whose host resolves only to public internet addresses.

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

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