In the education industry, especially when it comes to niche education courses, a provider sometimes may cancel a scheduled course. This happens due to lack of registrations.
Various providers have various thresholds for running a course. When a course is scheduled, it is by default tentative. Once the required number of registrations has been reached, the course will become confirmed.
A confirmed course is guaranteed to run. A tentative course will most likely run, but may get cancelled, usually up to two weeks before its start date.
Code42 will send a confirmation email to all attendees once a course has been confirmed.