1. 30-Day Window for E-Invoice Generation
The GST authority has implemented a strict validation rule on the Invoice Registration Portal (IRP). Taxpayers with aggregate annual turnover of ₹100 Crore and above cannot report invoices, credit notes, or debit notes beyond 30 days from the document date.
Invoices issued without a valid Invoice Reference Number (IRN) and QR code are treated as null and void under GST law, disentitling the recipient from claiming input tax credit.