So I was testing out Interactive Brokers' TWS platform today and when I checked the margin for buying 2 ES contracts, it said the that the value of the trade was higher than the $100K limit. I was given the option to "override and transmit" anyway. Has anyone else seen this? If so, what would happen if I did override and transmitted the order anyway? Would it immediately get canceled? Thanks guys. Edit: Which futures should I start out with that have good volume? I read somewhere here that NQ was a bit more beginner friendly.