An attribute is composed of an attribute class, attribute name, and attribute value. When an attribute value is deleted, it is removed from the Client interface.
To delete an attribute value
On the Setup tab, click Enumerated Values Manager.
From the Attribute Class list, select the class to delete the value from.
From the Attribute Name list, select the name to delete the value from.
In the Values field, select the value.
Click Delete.
Administration Tools: Enumerated Values Manager > View operation