# sandbox_server_required

> A sandbox key can only create simulated accounts.

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

HTTP 400. Nothing reached the broker.

**Likely cause:** Creating an account on a real broker server with a sandbox (twsk_) key.

**What to do:** Use server Tickwire-Sandbox and a magic login, or use a live key for a broker account.

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

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