sandbox_key_required

Server Tickwire-Sandbox is only for sandbox keys; sandbox and live never mix.

HTTP 400. Nothing reached the broker.

Likely cause: Creating an account on server Tickwire-Sandbox with a live key.

What to do: Get a twsk_ key with POST /v1/sandbox/keys (or /v1/sandbox/signup) and use it.

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.