I’ve been trying to find the same. Recently on 28th October, I noticed on my ledger that I’ve been charged a margin shortfall penalty for 20th October.
Margin shortfall is something I’m very particular about & keep checking during trading hours (and once pre/post market) to make sure it’s okay. Even if I missed something, I checked & re-checked to see if I got any margin call on sms/email but I hadn’t. Also, I’d made a payin of 1.3L the previous day and the overnight margin statements show sufficient margin as well. So, not sure what’s going on here.
Raised a ticket wanting to know more info about this, they gave a calculation as to how the margin shortfall figure was arrived at, which doesn’t really help much as I wanted to know when exactly this happened, maths ka plus minus toh main bhi kar lunga…