You can configure tags and values that you associate with an alert on managed appliances by using the Central Management System appliance Web UI:
You can configure restricted or unrestricted tags and associate them to filter incoming alerts on the managed appliances. A restricted tag can be modified, deleted, or changed to an unrestricted tag by a user that is assigned an Admin role. An unrestricted tag can be modified or deleted by a user that is assigned an Admin role or Analyst role. The total number of alerts and values are associated with a tag name. For example, you can define a tag with the name "Region" and the value "US". All the incoming alerts are filtered by "Region" as the tag name in the Alerts page on the managed appliances. Tags are automatically added to the database on the Central Management System appliance.
In the following example, the Central Management System appliance does not yet contain tags.

Usage guidelines
Follow these usage guidelines when you create tags and values to associate with an alert:
The name and value of the tag can contain alphanumeric characters only. Tag names and values are case-sensitive. UTF-8 is also supported.
The name of the tag can contain up to 100 characters.
Only a user that is assigned an Admin role can restrict a tag from other users.
Only an Admin user can modify, delete, and change a restricted tag to an unrestricted tag.
A restricted tag can be added only from the Settings > CM Settings > Alert Management > Tags page on the Central Management System appliance.
Access to the Web UI of the Central Management System appliance as Admin or Analyst
Admin, Analyst, or Monitor access to view restricted and unrestricted tags