A partial execution means that only some of your orders got filled. Partial executions occur when there aren’t enough orders to fill your order. Partial executions occur most commonly with limit orders placed on low-volume orders.
In order for an order to execute, there has to be a buyer and seller on both sides of the trade. So, if there aren’t enough shares in the market at your limit price, it may take multiple trades to fill the entire order.
ABC is a coin trading at Rs10.
You place an order to sell 1,000 shares of ABC at Rs11.
Your order is matched with a buyer willing to pay Rs11 for 400 shares.
Your order receives a partial execution of 400 instead of 1,000 because there weren’t enough orders available at your specified price of Rs11.