Let’s take the case of a stock which is in upper circuit and I placed an order which is pending. Presently I have no way to know that at what number is my order lying in the queue of all pending orders.
For example, there were 1000 pre-existing pending orders and I placed 500 orders. After I placed the order, more 5000 orders are placed. So in current market depth, it only shows 6500 orders. I want to know where exactly in the queue my order lies, which would be a great data point for me to use as a proxy of probability of execution of my order.