Central Excise Registration requires submission of prescribed application with business identification, PAN, premises, bank and major goods details. Form A-1 under rule 9 prescribes a unified application for Central Excise registration or amendment requiring registrant identification, business constitution, PAN particulars, premises boundaries and property rights, estimated investment, head office and authorised signatory details, disclosure of primary bank accounts, and designation of up to three major excisable goods/inputs. The form also requires business transaction numbers from other agencies, signatures by authorised persons with PAN, and an acknowledgement mechanism; accompanying instructions govern submission, evidence for PAN, notification of changes, and signature rules by business type.