Central excise registration procedures: mandatory registration, PAN-based authentication, online filing and specified exemptions for registrants. Specifies the registration obligation under rule 9 including online application in the prescribed form, PAN based registration and mandatory contact and business transaction information. Sets documentary and physical verification requirements, issuance of an online registration certificate pending post facto verification, and procedures for amendment, de registration, transfer of business and cancellation where premises are non existent, errors go unrectified, mis declaration occurs or the factory has closed.