Waiver of interest for delayed GSTR-3B filings due to portal glitch when electronic ledgers showed sufficient balance. Nil interest is notified for listed registered persons who failed to file FORM GSTR-3B by the due date due to a portal technical glitch despite having sufficient balance in their electronic cash or credit ledger or having deposited required amounts through challan; the waiver covers the period from the due date of filing to the actual date of furnishing the return.