Note: One global discount can be applied to multiple events. The number under Usage is the total usage for all events that used this global discount, event directors can Run Discounts Report to check the usage details. The global discount (discount name, discount code, events/merchandises to apply the discount to, and etc.) can also be modified after it has been used. If a global discount is currently applied to event A, but running a discount report for event A shows that the global discount usage for this event is less than the total usage number under the Global Discounts tab, it's possible that this global discount was previously applied to other events but later changed to be applied to the current event A. In this case, you also need to run discount reports for other events to verify the usage.