Input tax credit reinstatement permitted when supplier uploads missing invoice and pays duty and interest, triggering automatic recipient ITC restoration. If a supplier later uploads a previously omitted invoice and pays the corresponding tax and interest in the monthly return for the month of upload, and provided this is done before September of the next financial year, the recipient's reversed input tax credit will be automatically restored through the GSTN matching system and interest paid by the recipient at reversal will be returned via the automated GSTN process.