Export sales invoice date : 28-07-2020 but Shipping Bill Dated: 03-08-2020, I have to filed GSTR1 for the month July 2020 before due date, which date i want to considered invoice date or shippping bill date .
Invoice date taken i have to file in July GSTR1, But shipping date taken August GSTR1
Please kindly suggest which date and month to file gstr1.