As part of your admission you may be given course credit transfer or advanced standing for previous study.
If the course credit is given before your visa is granted, your Confirmation of Enrolment end date will reflect this and the length of your program will be reduced accordingly.
If course credit is given after your visa is issued, and results in your program length being shorter, the University must report the change of program length to this Australian Government Office which will affect your visa expiration date.
The University will only report changes to your program duration to this Australian Government Office if you receive 24 UOC or more course credit. You are still required to maintain a full-time study load, even if you have been given course credit.