Reversal of Output Tax

Rohan Bagra (91 Points)

02 December 2020  
October month 3B Filled
output
sales 800000 CGST 40000 SGST 40000
ITC CGST 13000 SGST 13000
Remaining Tax paid by cash

But there was nil output supply and nil purchase. all those figures were of an other party.

now in November 3B how to reverse this Output Tax and Input Tax???

please help