Income-tax appeal form requires appellant details, order particulars, tax payment data, disputed amounts, pending appeals, and appeal grounds. Appeal Form No. 99 requires the appellant's personal details, the relevant tax year or block period, and particulars of the order under appeal, including the authority passing it and the order identification details. It also seeks details of taxes paid, disputed income or demand, penalty, or TDS/TCS default depending on the type of appeal, together with particulars of any other pending appeal on the same matter.