resourceName This attribute is the name for the resource that is used for ' hierarchical addressing method ' to represent the parent - child relationships of resources . See clause 7 . 2 for more details . This attribute may be provided by the resource creator . The Hosting CSE shall use a provided resourceName as long as it does not already exist among child resources of the targeted parent resource . If the resourceName already exists , the Hosting CSE shall reject the request and return an error to the Originator . The Hosting CSE shall assign a resourceName if one is not provided by the resource creator .