upstream_unavailable

A Tickwire service is unreachable; the request was not sent.

HTTP 502. Nothing reached the broker.

Likely cause: The service is restarting.

What to do: Retry after Retry-After.

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.