terminal_unavailable

Signal webhook: the terminal did not answer a read the plan needs.

HTTP 503. Nothing reached the broker.

Likely cause: The terminal is down or restarting, so its symbol details, account information, positions or price could not be read.

What to do: Nothing was sent. Check the account’s health, then send a new alert.

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

Listed under Signal webhooks (TradingView) in Errors. Send the error’s requestId to support and we can find the request.