How to submit the demand?

no u don't have to file any return u just have to pay demand through challan no. 280 and select type payment 400 tax on regular assessment.

sir,

 ok after paying the tax where to show this BSR number date amount,generally which we used to show in ITR after payment of TAX before submitting the return.

if demand is appearing in income tax account under my pending action

all details relating to demand and tax payment should be updated with your income tax account
first login your account  >>>>
go to my pending action >>>>>
and submit response to outstanding demand