Mismatch between gstr1 and gstr3B

Balraj Rangi (10 Points)

26 July 2020  
for F.Y 2017-18, outward taxable supply and tax paid reported in gstr3B is more than gstr1 (actual supply as per books) except July 2017). In July 17 outward taxable supply is less in gstr3B as compared to gstr1.
in gstr-9 I declare the actual supply which match with gstr-1. now tax authority ask me to pay the gst shortpaid in July 2017 with interest.
is there any provision or circular/ notification to adjust the short paid liability of July in the upcoming months excess payment.