As in the example below,

MDS-ManagerAndContainer is Active whereas MDS-Manager2 is in Standby mode.
If a Multi-Domain Management with Provider-1 Superuser logs into MDS-ManagerAndContainer in
Read/Write mode using the MDG while the first user is still logged in, and another Provider-1
Superuser tries to log in to MDS-Manager2, what will happen? The second user will:

A.
get an application error and the MDG will close.

B.
get a message informing him that another user is logged in with Read/Write access. Hence, he
will be allowed to log in with Read-Only access.

C.
also be allowed to log in through the MDG in Read/Write mode and they can both make
changes to the Provider-1 configuration within the MDG.

D.
get a message informing him that another user is logged in with Read/Write access, and an
option to disconnect the first user will be given.

Explanation: