We have raised invoice in the month of November 2017 against original purchase order and filed GSTR 3B and GSTR 1. During February 2018 original PO cancelled and new PO issued. Now, the invoice raised to be cancelled. How to show cancelled invoice in GSTR 3B and GSTR 1?
Cancellation of Invoice
Cancelled invoices should be disclosed by issuing a credit note in the GSTR-1 of the period when the cancellation occurs, referencing the original invoice. Any new invoice issued thereafter must be reported in B2B if the recipient is registered or in B2C if unregistered. There is also a statutory option to issue a revised invoice under GST, and all such actions must be consistently reflected in GSTR-1 and in GSTR-3B adjustments where required. (AI Summary)
TaxTMI 

