Companies performing corporate secretarial services are also known as corporate service providers (CSPs). Persons wishing to provide CSP services and carry out filing transactions using using BizFile+ must first be registered as a Filing Agent (FA). A registered FA may carry out a transaction with ACRA only if he acts by or through a registered Qualified Individual (QI). A Filing Agent may include a law firm, accounting firm or corporate secretarial firm that provides statutory filing services for its clients. A Qualified Individual may include advocates and solicitors, public accountants, chartered accountants and corporate secretarial agents.