I recently modified the Delete issue permission in a service desk project removing Service Desk Team and Customer - Portal access. When I went back into the project settings later I was greeted with a Warning that the project may not function correctly with those modifications so I reversed them. I subsequently noticed that there is no delete option in the portal so it appears I can leave that alone.
I've seen multiple posts here about modifying this permission with no mention of warnings or adverse effects. We'd really like to disable the ability to delete an issue for anyone other than admins.
Does anyone know the reason for the warning?