"Do the Right Thing...!!!"
128147 Points
Joined January 2015
If you returned your purchased goods to your Supplier with 'Purchase Return / Debit Note". Then you ll be add it as Tax liability and show it your "Outward Supplies in GSTR 3B"
https://www.caclubindia.com/articles/how-to-file-gstr-3b-and-adjust-tax-liability-to-itc--30939.asp