Add statements surrounded by *: The ParentNodeProperty contains the path to the identifier of the parent node. For the root node of the hierarchy, the parent node identifier is null. The optional DistanceFromRootProperty contains the path to a property that contains the number of edges between the node and the root node. Remove: HierarchyLevelProperty contains the path to a property with an integer data type that contains the level of the node in the hierarchy. Replace: "HierarchyLevelProperty" by "DistanceFromRootProperty" Applied: https://www.oasis-open.org/committees/document.php?document_id=56041&wg_abbrev=odata