Hi guys, anyone have added category into managed placement? I don't mean adding the specific websites like "www.example", I mean the whole category. When the category is added successfully, it displays as "category::travel" under the managed placement tab. When I am directly adding "category::travel" , there is an error message as below: These entries could not be added due to the following reasons: An error occurred. Please try again later. category::travel Can anybody kindly teach me how to add category step by step? Appreciate very much for your patience!