A reporting entity must conduct standard customer due diligence in the following circumstances:
(a) if the reporting entity establishes a business relationship with a new customer:
(b) if a customer seeks to conduct an occasional transaction through the reporting entity:
(e) if, in relation to an existing customer, and according to the level of risk involved,—
(i) there has been a material change in the nature or purpose of the business relationship; and
(iv) the reporting entity considers that it has insufficient information about the customer:
(f) any other circumstances specified in regulations.