Due to non-filing of GSTR-1, the GST Common Portal restricts GSTR-3B

The GST Common Portal is NOT ALLOWING TO OPEN GSTR-3B of October, if GSTR-1 for the same tax period i.e. October has not been filed.

Amended section 39(10) restricts the filing of GSTR-3B for the current tax period if any of the GSTR-1 for the previous period including the current period has not been furnished by the taxpayer.

Source #GST Portal