SL triggered even when LTP wasn't close to SL

Bought 2600 bajajfin pe at 74. SL 70, trigger price 71. Premium went to 79 & at 76 when it triggered. No drastic change in fut or equity price of stock & i had my SL at 70 triggered when the ltp was around 76. Doesn’t even reflect in the chart. why does this happen? Is the exchange at fault?

It’s because zerodha doesn’t have tick chart so the trade that triggered your SL didn’t show. It happens to me all the time. Nothing you can do about it.