The Login domain registers a user with the system, after which the user can request1 or post2 Domain Model content. A Login request can also be used to authenticate a user with the system.
• A consumer application must log into the system before it can request or post content.
• A non-interactive provider application must log into the system before providing any content.
For further details:
• Section 3.2 details the use of each message within the Login domain.