Appeal to Appellate Tribunal requires Form E.A.-5 with detailed order particulars and quadruplicate filing and attachments. Form E.A.-5 is the mandatory application for appeals to the Appellate Tribunal, requiring identification and contact details, designation and address of the Commissionerate or applicant authority, authorising documents where applicable, full particulars of the challenged order (number, date, issuing officer, place, receipt dates), and whether the issue concerns rate or valuation. The form requires factual and contested particulars (goods classification, dispute period, duty/interest/refund/fine/penalty amounts, market value of seized goods), selection of priority issues, reliefs claimed, statement of facts and grounds, signatures, and quadruplicate filing with copies of underlying orders (one certified).