On 14th June 2017, BIOCON (NSE) price in historical data as well as live feed on zerodha website shows closing of "Rs. 516" and opening on 15th June 2017 shows a drop of Rs. 170.
There are many other stocks having such discrepancies. Can you please run a query for all stocks and fix these issues with historical data. My algo's tend to screw up as incorrect technical value for technical indicators are being calculated.