GSTN has issued advisory that auto-population of e-invoices into GSTR-1 (of March, 2021) is still in progress and is likely to take some more time. Therefore, advised the taxpayers not to wait for the complete auto-population, and instead proceed with preparation and filing of GSTR-1 for March, 2021 (by the due date), based on actual data as per their records.
Source: taxmann.com