Technically yes, if you become over-indebted again after receiving your clearance certificate, you can apply for debt review again.
However:
• It indicates that spending habits haven't changed
• Credit providers may be less accommodating
• The process starts from scratch with new fees
• Prevention is better than cure
After completing debt review, we strongly recommend:
• Maintaining the budgeting habits you learned
• Building an emergency fund
• Using credit very cautiously
• Seeking financial counselling if you notice warning signs