invalid

The subscription frame on the terminal WebSocket (`/{mt4|mt5}/{id}/ws`) is invalid.

WebSocket error frame.

Likely causes:

• Unknown topic.
• A prices or bars topic without a symbol.

What to do: Fix the subscription frame.

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

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