Registration is defined as those functions related to the online input of data which result in the establishment of a new customer, identified by a Taxpayer Identification Number (TIN), and/ or account number. Registration identifies the type of business activity by the account type for programs administered by the CDTFA. This chapter provides policy and procedures for registration of tax and fee programs. “Registration” does not include changes made to an existing account or reinstatement after an account is closed in error. These functions are covered in depth in Chapter 3, Account Maintenance.