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There is also a 200 order placement per minute limit by the API.
Apart from this, Zerodha RMS has an account level limit of 2000 MIS orders per day and 2000 BO/CO per day limit.
My query is that if I have placed an MIS order with order id "A1", that accounts for 1 order and makes the balance MIS orders for the day to 1999. If I modify the order "A1" 20 times, will it reduce my balance to 1979 for the day or order modification is not a part of the 2000 MIS orders per day?
If I modify the order "A1" 20 times, will it reduce my balance to 1979 for the day or order modification is not a part of the 2000 MIS orders per day?
No, your order count will remain the same(here 1999 post 1 "A1" order placement) for the day. You can go through this article to know more. Also, make sure you don't exceed the rate limit of 200 order placement(this includes order modification as well) per minute. Rate limit of 200 order placement + modification is from kite connect side and account level limit of 2000 MIS order per day is from Order management system side.