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For example, StateCustomer has an operational site and a training site. An administrator in StateCustomer creates a user account for TeacherUser in the operational site and assigns that account to the LocalSchool organization in the operational site. Even though the TeacherUser account exists in the shared login system, so far it can only be used in the operational site. Why? Because the two sites contain different data, stored in locations that are isolated from each other, and TeacherUser has not yet been assigned to an organization in the training site.
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Data in the shared login system include username, password, and related account metadata, such as the last date the account was used to log in and whether the account is active. This metadata is not site-specific. Metadata updates resulting from actions in either site are stored in the shared login system and the metadata updated affects both sites. For example, regardless of which site you visited most recently, the time and date you most recently logged in will read the same from either site.
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