max_open_positions_reached
Signal webhook: the webhook already has its max number of open trades.
HTTP 422. Nothing reached the broker.
Likely cause: The webhook’s open trades are at max_open_positions, or at max_open_positions_per_symbol on this symbol.
What to do: Close a trade first, or raise the limit. Nothing was sent.
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.