I noticed that it sometimes happens that users select parents from the same type like story-story, epic-epic, ... According to this post: https://developercommunity.visualstudio.com/t/same-category-hierarchy-error-but-the-specified-wo/761057 It's highly recommended to avoid this, due to obvious reasons.
Is it possible to prevent this by default? Like a rule: if WIT is changed & parent type equals WIT type --> error