Hi yusi
I hope this will not be a problem to those, who do not use Nest Trader but NOW.
Further will backfill pose a problem to NOW users
Ravi is talking about Plus backfill. It applies to both NOW and Nest / Zerodha Trader.
Should clarify a few points, just so that the quick & dirty solution is not followed blindly:
1. The quoted email was written on Friday. Today is Monday. So, in point 5, you would have to Plus backfill 27th and today, rather than use internal backfill.
2. If you use continuous contract such as NIFTY_1, no problems. However, if you track symbol data in the form as NIFTY13OCTFUT, do not use Plus backfill for dates prior to 27th.
3. Have not checked various contracts (request you to provide feedback on the ones that you do), but this mismatch does not seem to occur for Options.
Again, check manually first -- take a quick look at the Plus Data Table. Best would be to ask Omnesys to correct their data.