How Australia's system works · Episode 3
Before you check a single customer, there is a step zero. You have to put your business on the record. Australia's system begins with a register.
Step zero — enrol

It is called enrolment. When your business starts providing a designated service, you tell AUSTRAC you exist, and what you do. For most Tranche 2 businesses, it is the very first obligation you'll meet — and the one with the nearest deadline.
(1) The AUSTRAC CEO must maintain a roll for the purposes of this Part, to be known as the Reporting Entities Roll.
The 28-day clock

And there is a clock. Enrolment runs on a twenty-eight-day rule — the kind of deadline you want to meet early, not discover late. Miss it, and you are non-compliant before you have served a single customer.
So the very first move under this regime isn't a check. It is a registration. Get on the Roll, on time — and everything else in this series is simply what you do next.