action_required
Signal webhook: the alert has no action.
HTTP 400. Nothing reached the broker.
Likely cause: The alert message has no action (buy, sell, long, short, flat) and no market_position.
What to do: Add an action to the alert message. See the TradingView alerts guide.
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.