Cancellation of Invoice already shown in GSTR1

khushwant Khandelwal (.) (41 Points)

14 February 2021  
I have already filled GSTR1 for December but now I want to cancel 1 invoice & Issue revised invoice in January.

kindly suggest how to go forward.

should I issue Credit note & Issue new invoice in January
or
Show December invoice as cancelled & issue new invoice in January

Thanks