At 3:30 PM the Data i.e. for OHLC values are coming same as LTP.

Why at 3:30 PM the Data i.e. for OHLC values are showing the same as LTP?

Answer below:

The market closes at 15:30 PM. So for the 15:30 PM bar, there could max a single tick.

When a bar is made with a single tick, the open, high, low, and close would be the same.

Please note how the bars are formed:

For data coming from:

09:15:00 to 09:15:59 > bar 09:15

09:16:00 to 09:16:59 > bar 09:16

09:17:00 to 09:17:59 > bar 09:17

.....

15:28:00 to 15:28:59 > bar 15:28

15:29:00 to 15:29:59 > bar 15:29

15:30:00 to 15:30:59 > bar 15:30 (but the market closes at 15:30:00. So there can be max 1 tick or even no tick in the last second resulting in no 15:30 bar in that case).