Bank Nifty Data is coming as null in websocket

I am getting this as response from websocket for Bank Nifty
MarketData(type=live_feed, feeds={NSE_INDEX|Nifty Bank=Feed(ltpc=null, oc=null, ff=Ff(marketFF=null))})
This is the message that I am sending to websocket
{“guid”:“someguid”,“method”:“sub”,“data”:{“mode”:“full”,“instrumentKeys”:[“NSE_INDEX|Nifty Bank”]}}

I am able to retrieve the Bank Nifty response on my end. Could you please share your code and specify the time at which you encountered this issue for further investigation?

Thank you.

This is happening to me right now, I am not getting data for NSE_INDEX|Nifty Bank
getting the data for other instruments in the websocket.
@Ketan Can you check this

@Ketan Can you suggest me a possible solution on this, I tried doing everything from my side, but there seems to be no problem from here. I am sending Bank nifty along with other instruments but still getting null response of bank nifty but correct response of other instruments