Cancel An Open Order

The account to which the order will clear.

The IB-assigned order ID of the desired order ticket.

ExtOperator is used to identify external operator.

For all orders for US Futures products, clients must submit this flag to indicate whether the order was originated manually (by a natural person) or automatically (by an automated trading system transmitting orders without human intervention). Submit a True value to indicate a manually originated order, and submit a False value to indicate an automated order. Orders for USFUT products that do not include this field will be rejected.

Time of manual cancel.