Login to GST Portal and go to ‘My Applications’ under ‘User Services' choose this "A taxpayer has not made any payment and does not have a payment Reference Number (PRN)."
A taxpayer has to manually enter SCN Number and select the issue date which must be within 30 days of making payment.
Select the Section under which payment is being made, the Financial Year and then select the from date and to date of the overall tax period.
Provide details of payment including interest and penalty. A taxpayer can provide additional details by clicking on ‘Add’. Then, click ‘Proceed To Pay’. make payment from the balance through cash or credit ledger and offset liability. File with DSC or EVC.