execution_unavailable

A trade sent over streaming could not reach the execution service, so it was not sent (`stringCode` of a streaming `InternalError`).

WebSocket error frame. Nothing reached the broker.

Likely cause: A short outage inside Tickwire.

What to do: Retry with the same requestId.

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

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