Centralized registration allows taxpayers with centralized billing or accounting to register at billing premises for service tax compliance. Amendment permits taxpayers with a centralised billing or centralised accounting system to opt for registration at the premises where those centralised functions are located; such registration is to be granted by the Commissioner of Central Excise having jurisdiction over those premises, without affecting registrations granted prior to the amendment. The amendment also allows audits to be conducted by an audit party deputed by the national audit office.