Appeal to Appellate Tribunal requires mandatory particulars, supporting documents and quadruplicate filing for statutory customs appeals. Form C.A.-5 sets out the mandatory particulars for an appeal to the Appellate Tribunal under section 129A(2) or section 129D(4): party and contact details, port/location codes and IEC/PAN/UID, designation of the officer and Commissionerate, dates of orders and receipts, whether the order raises duty rate or valuation questions, description/classification of goods, period and monetary effects of the dispute, priority subject matter selection under Import/Export/General, reliefs claimed, statement of facts and grounds, signatures, and mandatory quadruplicate filing with prescribed enclosures including authorisations or committee orders.