The Email, SMS, and SMS Direct Actions can include three categories of percent variables in Alert Center notification message:
Use Alert Center percent variables in the Alert Center message body for SMS Direct and SMS action notifications, and in the subject line of Email notifications.
| Name | Description | 
| %AlertCenter.Threshold.ID | The threshold ID listed in the ProActiveAlert table. | 
| %AlertCenter.Threshold.Name | The threshold name. | 
| %AlertCenter.Threshold.Description | The threshold description. | 
| %AlertCenter.Threshold.PollingInterval | The threshold polling interval. | 
| %AlertCenter.Threshold.TotalItems | The total new new and current items out of threshold. | 
| %AlertCenter.Threshold.TotalNewItems | The total of newly alerted items. | 
| %AlertCenter.Threshold.TotalCurrentItems | The total of existing items out of threshold (not including new items). | 
| %AlertCenter.Threshold.TotalMonitoredItems | The count of items that can be evaluated in the threshold, i.e. there are 22 devices that have a Disk Performance Monitor configured. | 
| %AlertCenter.Threshold.TotalAutoResolvedItems | The number of items automatically resolved. | 
| %AlertCenter.Threshold.NewItemNames | The display name of each new item in an alert. | 
| %AlertCenter.Threshold.CurrentItemNames | The display name of each current item in an alert. | 
| Name | Description | 
| %AlertCenter.NotificationPolicy.ID | The notification policy ID. | 
| %AlertCenter.NotificationPolicy.Name | The notification policy name. | 
| %AlertCenter.NotificationPolicy.Description | The notification policy description. | 
| %AlertCenter.NotificationPolicy.Recipients | The list of actions included in the policy. | 
| %AlertCenter.NotificationPolicy.NextEscalationTime | When the next step is to be sent. | 
| %AlertCenter.NotificationPolicy.EscalationStep | The current escalation step. | 
| Name | Description | 
| %System.Date | The current system date. | 
| %System.Time | The current system time. |