A basket order is a financial market transaction that enables an investor to buy or sell a group of securities as a single order. These securities can encompass stocks, bonds, ETFs, or other financial assets.

Basket orders provide a convenient way to handle multiple orders at once. Each order in the basket order undergoes the same checks as if it were an individual order. If the conditions set by the client are met, the orders are executed. However, if there isn't enough money to complete the entire basket order, only the orders that can be paid for will be executed.

Here's an example:

Let's say a client has ₹2000 in their trading account. They place one buy order for ₹1500 and another buy order for ₹3000 within a basket order.

In this case, the buy order for ₹1500 will be successfully executed because there's enough money to cover it. However, the buy order for ₹3000 will be rejected due to insufficient funds, resulting in a partial execution of the basket order.

It's important to note that basket orders can be rejected for various reasons, including not having enough margin, using the wrong order type, or the specific instrument not being available or being blocked for trading, among other possible factors.