I am trying to assign security roles to all users in an environment. I do not want to do this on a 'Business Unit' level as that would mean every time we need to update the 'all users' permissions, we would need to do it for every Business Unit.
My plan was to create a dynamic Azure Active Directory group which holds all members in the tenant. I then create a new team of type 'AAD Security group' and assign that team the appropriate permissions. However, when I try to create it, I get the following error message
Unknown error. Please try again later.Error Details:The group whose AzureActiveDirectoryObjectId = xxxxxxx is not an AadGroup or OfficeGroup, the attribute GroupTypes are = DynamicMembership.

It looks like it is not possible to use an dynamic AAD Security Group.
Does anyone know how to get around this limitation or other approaches to assign security roles to all users in an environment?