Final return in FORM GSTR-10 extended for cancelled registrants to a notified filing deadline under GST rules. Persons whose GST registration was cancelled on or before 30 September 2018 are notified as a class required to furnish the final return in FORM GSTR-10 by 31 December 2018, under the Haryana GST statutory framework and applicable rules, thereby extending the filing timeline for that defined group.