Section 7B(1)(a) in The Kerala Tax on Luxuries Rules, 1976
(a)Any person bound to apply for impleading legal representatives of a deceased party may apply, within sixty days from the date of abatement, for an order to set aside the abatement, and if it is proved that he was prevented by sufficient cause from continuing the proceedings, the appellate or revisional authority, as the case may be, may set aside the abatement.