Trigger Conditions
Alert trigger conditions define the logic that triggers an alert.
The trigger type of an alert determines what type of alert it is, and how it will trigger. For example, a Channel Error alert will trigger when an error occurs in one of your channels. The No. of messages (sliding window) alert will trigger when a particular statistic has been incremented a certain amount of times over a specified time period.
Use the drop-down menu at the top of the edit view to change the trigger type: