The stock exchange sets limits on how many units or contracts you can trade in a single order.
For Example:
NIFTY Options: 1 lot equals 75 units, with a maximum of 1800 units per order (24 lots)
BANKNIFTY Options: The limit is 900 units per order (15 lots)
If you want to place a large order, Groww will automatically split it into smaller orders. For example, if you want to buy 10,000 units of NIFTY options, the order will be divided into multiple parts: 5 orders of 1800 units each and 1 order of 1000 units.
Note: Brokerage charges will apply to each order separately.