Cancel Order Errors

Current user-facing message for NubraTrader.cancel_orders_sentinel() and POST /sentinel/orders/cancel.

Error message	Meaning	Recommended action
Write to support@nubra.io or call 08645322504.	The intent order was not found or the cancellation could not be processed.	Provide the order ID, request ID, environment, and sanitized response to support.

Cancellation is not guaranteed after an order reaches the exchange. Always fetch the latest order state after an uncertain cancellation response.