Suppose I am placing a limit order with quantity 100. If 40 are executed and 60 are pending after some time, How can I modify the order price for remaining 60? Should I modify order with quantity 60 and new price or with the original quantity of 100 and new price?
You can just send the new price and order should be modified. You don't need to send quantity while modifying if you don't intend to change the quantity of an order.
You don't need to send quantity while modifying if you don't intend to change the quantity of an order.
Thanks again.