unknown_field

The trade body has a field the trade route does not know, so nothing was sent. It is the `code` of a ValidationError.

HTTP 400. Nothing reached the broker.

Likely causes:

• A misspelt field, for example stopLosss for stopLoss.
• A field from another API that this route does not take.

What to do: Fix or remove the field. details names it, with a did-you-mean hint when one is close.

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

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