In the Alberta foreclosure process, once a Statement of Claim has been filed and served to all the parties, the property owner has 15 days to file a Statement of Defense or a Demand of Notice. Generally speaking, a Statement of Defense should be filed when the liability of the property owner is in dispute.
On the other hand, a Demand of Notice would be more appropriate when the only thing in dispute is the amount of the mortgage. Since a Demand of Notice can represent an admission of liability, the property owner should only file the Demand after careful consideration of the situation and the possible consequences.