Where to find open orders
Open orders are listed in the market interface under your nation context. Use the current nation selector first, then inspect the open orders panel for side, price, quantity remaining, and creation tick.
Treat this view as your pending commitment list. If an order is open, it can still affect future settlement outcomes.
Cancel rules
Cancellation is usually allowed for orders that are still open and cancelable under market state. Once an order is fully filled, already terminal, or otherwise locked by processing, cancellation will fail by design.
After canceling, confirm the result in both the open orders list and Outcomes feed. This avoids false assumptions from stale UI data. If you are actively adjusting strategy, it helps to cancel stale orders in batches at consistent intervals rather than one-off panic changes. A clean order book is easier to reason about than mixed old and new intent.
Error reasons (ORDER_NOT_FOUND, ORDER_ALREADY_FILLED, ORDER_NOT_CANCELABLE)
ORDER_NOT_FOUND means the requested order ID is not visible in your cancel context, often because it never existed there or was already removed.
ORDER_ALREADY_FILLED means settlement completed before your cancel request won the race.
ORDER_NOT_CANCELABLE means the order exists but current state does not permit cancellation.
Each code is actionable: re-query open orders first, then decide whether a replacement order is needed. When replacing a canceled or failed order, review recent market depth first. Reposting at the same price without checking spread conditions often recreates the same problem.