Hi,
There are lot of stock tickers on NSE for which historical prices are missing now, wasnt the case some time back. Following are some examples below and the code used to get the price data
['5PAISA', '63MOONS', 'A2ZINFRA', 'AARTISURF']
The back testing period started from 1st October 2022
indicator_lookback = 30
indicator_freq = '1d'
price_data = data.history(security, 'close',
context.params['indicator_lookback']+1,
context.params['indicator_freq'])
px = price_data.loc[:,security].values