Gstr3b taxable value is entered wrongly and filed to be corrected

You can reset the GSTR3B submitted return only.

The taxpayer once submits the return cannot change the value of Outward supplies. The value of outward supplies gets locked and any corrections or changes intended to be made has to be done while filing the GSTR-1.

You can only rectify the mistake in your next month/quarter GSTR 3B. 

The next GSTR 3B mentions correct taxes but adjusts the sales figure with the wrong reported last month.