sandbox_server_required

A sandbox key can only create simulated accounts.

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 in Errors. Send the error’s requestId to support and we can find the request.