Deleting a Hierarchical Topic
Deletion of a topic/subtopic from the hierarchical 'name space' depends on the value of the parameter AllowDeletionOfSubTopics, which can be configured through Fiorano Studio. If this value is set to true, then deletion of a topic/subtopic deletes all the children of this topic/subtopic. If it is set to false, an exception is thrown indicating that the user first needs to delete the children of the topic\subtopic before deleting the topic itself. By default, this variable is set to false.