Explanation/Reference:
Reference: Subclassifications provide a way to feed balances. Elements can have only one primary and secondary classification, but multiple subclassifications. You can create subclassifications or use predefined ones. Once a subclassification is associated with a classification it cannot be associated with another classification. A subclassification name can be reused under different primary classifications, but you will have to create separate balance feeds for each subclassification with the same name.