>> Obtaining IRN by notified taxpayers is a legal requirement before issue of specified documents to recipients. Upon generation of IRN, amendments are not possible on IRP and cancellation of IRN only is permitted within a time window. So, the details of invoices actually issued during the tax period have to be reported in GSTR-1. GSTR-1 is the final and self-assessed statutory statement of outward supplies by the taxpayer, at the end of the tax period. In the e-invoices auto-populated in GSTR-1 tables, taxpayers shall delete the details, wherever required, as per the documents actually cancelled during the tax period.