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Document Structure for Master Data 
In Knowledge Management, documents for master data are structured in a hierarchy that is made up of several folders. The documents are assigned to folders on the basis of their properties. Documents are always displayed on the lower level. The hierarchy tree for the documents contains folders that are only used for structuring purposes and do not contain documents, as well as folders in which documents are displayed:
● Folder for the system alias
● Folder for master data (folder without documents)
● Folder for specific master data, such as material or cost center (folder without documents)
● Folder for specific master data (folder without documents)

On the first level of the hierarchy under the BI CM repository, the folder for the BI system is displayed as the system alias folder.
On the second level you find the folder for master data and just underneath, on the same level, the folder for specific master data, such as material or cost center. This folder is used for structuring purposes; it does not contain documents. The documents are displayed in the folders below. For example, documents can be displayed for material number 1144 or cost center ABCD. The documents for hierarchies are also displayed on the lower levels.