Yep, the accessrights of Mendix take some getting used to.
The "Admin, User” roles shown in the popup of entity Asset are the Module Roles.
The "Admin, User” roles shown in the error are the Project Roles.
You still need to connect the two. Project role Admin to Module role Admin and Project role User to Module role User.
To do so:
Hello Tim,
it works. Thanky you!!!
kind regards
Andreas