Where to find challan serial number after paying self assessment tax through cheque

As paid in bank, Wait for at least 5/7 working days to reflect in the system.

Already 15 days have been passed but not reflected

If you have details like CRN no., BSR code etc. fill the details of challan manually in tax paid column, & file return.

Bank would not have reported it to ITD, due to cheque payment.

Please go to AIS in IT portal and open Financial year as 23-24 ( By default it will be showing FY 22-23) and under payment of taxes it will be reflected. As tax is paid by you after 01/04/23, it will come here only.