Delete categories and accounts

Please appreciate that someone can tell me if it is possible to delete categories and accounts created after and authorized, despite having no operations.

Thank you

System won't allow to delete categories & accounts once authorized.
You can close the account which will be moved to history.

It can be deleted from the backend.. Through jsh prompt, open the record to be deleted (Ex :- JED F.CATEGORY <rec id>) and delete it using "FD" cmd.. Similarly do the same for history files, (Ex :- JED F.CATEGORY$HIS <rec id>;<cur no>). before deleting history files do "LIST F.CATEGORY$HIS WITH @ID LIKE <rec id>..." to check how many entries r there in history file and delete all.