Empty historical data before 2015

I'm successfully getting historical data of 2015 nifty 50 stocks, but when I'm searching for the same in even 2012(let's say reliance), I'm getting empty.
The docs says several years, what's the definition of several years here?
I think it's pretty lame that not even a decade of data is being supported here.
Kite Connect API version:3 (gradle dependency "implementation 'com.zerodhatech.kiteconnect:kiteconnect:3.1.0'")
Kite Connect client: Java


code to get the data: HistoricalData historicalData = kiteConnect.getHistoricalData(from, to, id, "minute", false, false);