QuantConnect/Lean · error · RegressionTestException

There should be no open orders

Error message

There should be no open orders

What it means

Asserts that after the full lifecycle there are no open orders: Transactions.GetOpenOrders().Count == 0. The delisting/cancellation should have cleared all orders. A non-empty open-orders list means an order was left dangling.

Source

Thrown at Algorithm.CSharp/DuplicateOptionAssignmentRegressionAlgorithm.cs:188

            if (!_optionDelistedWarningReceived)
            {
                throw new RegressionTestException("Option delisting warning was not received");
            }

            if (!_optionDelisted)
            {
                throw new RegressionTestException("Option was not delisted");
            }

            if (!_orderCanceled)
            {
                throw new RegressionTestException("Order was not canceled");
            }

            var openOrders = Transactions.GetOpenOrders();
            if (openOrders.Count != 0)
            {
                throw new RegressionTestException("There should be no open orders");
            }

            if (!Portfolio.Invested)
            {
                throw new RegressionTestException("Portfolio should be invested");
            }

            // We should have the stock since the option was assigned
            if (Portfolio.Positions.Groups.Single().Single().Symbol != _stock)
            {
                throw new RegressionTestException("Portfolio should have the stock");
            }
        }

        /// <summary>
        /// This is used by the regression test system to indicate if the open source Lean repository has the required data to run this algorithm.
        /// </summary>
        public bool CanRunLocally { get; } = true;

View on GitHub (pinned to d2c3659f87)

Solutions

1. Log the contents of GetOpenOrders() to identify the dangling order(s) and their status.
2. Confirm the delisting/cancel sweep in the TransactionHandler cancels orders for the delisted symbol.
3. Ensure the test's own logic does not submit an order that is never resolved.

Example fix

// before
var openOrders = Transactions.GetOpenOrders();
if (openOrders.Count != 0)
{
    throw new RegressionTestException("There should be no open orders");
}

// after
var openOrders = Transactions.GetOpenOrders();
if (openOrders.Count != 0)
{
    throw new RegressionTestException(
        $"There should be no open orders. Open: {string.Join(", ", openOrders)}");
}

var openOrders = Transactions.GetOpenOrders();
if (openOrders.Count > 0)
{
    foreach (var o in openOrders) Log($"Open order remains: {o.Symbol} {o.Type} {o.Quantity} status={o.Status}");
}

When it happens

Trigger: An order remains open because it was not filled and not canceled, or the delisting-driven cancellation did not cover it.

Common situations: New order type not handled by the delisting cancel sweep; a partial fill left a residual open order; cancellation logic scoped to the wrong symbol.

Related errors

• Order was not canceled
• Option was not sold
• Option was not assigned
• Stock was not assigned
• Option delisting warning was not received

AI-assisted analysis of QuantConnect/Lean@d2c3659f87 (2026-08-13). Data as JSON: /api/errors/195420b1e802f788. Report an issue: GitHub.