Notifications can be of two types: alarm notifications and update notifications for events and todos.
For alarm notifications, the value of MQ_MESSAGE_TYPE_HEADER_PROPERTY is simply "alarm".
For update notifications, the value of MQ_MESSAGE_TYPE_HEADER_PROPERTY depends on the type of action that triggered the notification. Table 2–2 lists the trigger actions and the corresponding values for this property.
Table 2–2 Update Notifications Values| 
 Trigger  | 
 Update Notification Value  | 
|---|---|
| 
 Deleting a calendar  | 
 DELETECAL  | 
| 
 Modifying an event  | 
 MODIFYEVENT  | 
| 
 Modifying a todo (task)  | 
 MODIFYTODO  | 
| 
 Creating an event  | 
 CREATEEVENT  | 
| 
 Creating a todo (task)  | 
 CREATETODO  | 
| 
 Refreshing an event  | 
 REFRESHEVENT  | 
| 
 Refreshing a todo (task)  | 
 REFRESHTODO  | 
| 
 Replying to an event  | 
 REPLYEVENT  | 
| 
 Replying to a todo  | 
 REPLYTODO  |