What is causing this problem?

A user account has the remote-debug-permission parameter set but the user is unable to log in to
any devices. What is causing this problem?

A.
The user is only configured with the qfabric-user class.

B.
The user is not a root user in the QFabric system.

C.
The user is not a superuser in the QFabric system.

D.
The Node devices have not been configured with the correct users.