Attribute names are case-sensitive. Unlike previous versions, User [sic] attributes can be renamed after creation. Simply select the attribute in the Document Inspector's User tab, select the name, enter a new value and press Return. Attribute listings and Key Attribute entries will update. However, any explicit references to the old name in action or export code, templates, boilerplate code, etc., will be unaffected. Such references must be manually editing but agents can help to find such references for correction.
System attributes can not be renamed.