Acts as a container for BusinessKeys. Gives details on the business key(s) of a Noun. Identifies a property that is part of a Key. Metadata customizations can be defined at various levels. INFOR - Additional standard metadata as defined by Infor BOD Librarians. APPLICATION - Metadata used by a specific application. CUSTOMER - Metadata specific to a given customer deployment. This is typically added by Infor PSO, but may possibly be added by the customer themselves.