due date of filing of refund for the Financial year 2017-18(July to march) shall be considered as the before the expiry of two years, i.e, if the clint applied on 30.12.2019 , is eligible.
or form the relevant date of filing of GSTR-3B, in this case refund for the period July to December 2017 will be treated as time bar.
pls clarify which one is right