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To add the ReferenceViewItem to the view, open the corresponding view in the RelationEditor: Custom->View->VIEW->CUSTOM->CUSTOM->TEMPLATE ->VIE_01. The ReferenceViewItem can then be assigned to the view.
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To correctly display data in hierarchical structures such as trees or nested lists, a view must retrieve the root objects (root elements) of the first level. This ensures that the view has the entry point for navigation and that child elements are referenced correctly. To create a RootObject, the MetaClass must be dragged into the BulkEditor. Then, an object can be created. This object must then be dragged onto the MetaClass in the Relation Editor.