AWS mumbai ap-south-1

You have to use identifier value, not symbol name. For TCS use `TCSEQN`

API response is in JSON format.

Yes, right now it only list stocks which are in these indicies - NIFTY 50,NIFTY NEXT 50,NIFTY 100,NIFTY 200,NIFTY 500,NIFTY MIDCAP 50,NIFTY MIDCAP 100,NIFTY MIDCAP 150,NIFTY SMLCAP 50,NIFTY SMLCAP 100,NIFTY SMLCAP 250,NIFTY MIDSML 400,NIFTY BANK,NIFTY AUTO,NIFTY FINSRV25 50,NIFTY FIN SERVICE,NIFTY FMCG,NIFTY IT,NIFTY MEDIA,NIFTY METAL,NIFTY INFRA,NIFTY ENERGY,NIFTY PHARMA,NIFTY PSU BANK,NIFTY PVT BANK,NIFTY REALTY,NIFTY MNC,NIFTY PSE,NIFTY SERV SECTOR

The script is scheduled to execute only between 8:30 am till 4:30 pm IST.

yes