If you take intraday cash selecting Intraday = you will get 5% short penalty
If you trade intraday cash selecting CNC you need upfront margin to sell = 5% short penalty
If you trade BTST without 20% margin of total value = you will get a 5% short penalty
If you trade BTST with a 20% margin value = you get a 5% short penalty
You buy stock in CNC and wait till the holding period = you will get a short penalty
Now if I sell my holding stock I know I will get a short penalty
so, overall buying in cash or selling in cash whatever you select be prepared for a short penalty.
Few are rules few are their own rules.
after getting these many short penalties also no one really cares about calling their clients for extra margin needed or you are doing it wrong else you will get penalties (warning)
writing one fking blog isn't going to do much. Should able to explain with examples. mine are a few examples and still a lot more to get shaved.
why do you allow to sell when margin requirements are not met? or allow to buy when there is still a previous settlement pending and having no upfront margin?
People just check your Backoffice because brokers gave up.