Can I exit my G-sec investments before its maturity period?
December 17, 2018, onward, you will be able to sell G-Secs directly on the exchanges similar to stocks & ETFs. Click here for the NSE circular regarding this.
You can add the scrip to your market watch and place a sell order (Limit or Market) Or place a sell order directly from the holdings page in Kite.
You will not be able to exit T-bills prematurely. You will have to hold them until maturity.