In the Vancouver release, there is one new field - Federated ID added to user table (sys_user), which is a unique identifier for an identity using a hashing function across the ServiceNow instances.

By using the User ID and Email of the user across the instances, the Federated id is created and displayed in the sys_user table (see below image). The output is known as "Federated ID" which is a hash that is created using a default or custom selection criteria that then can be used to cross-reference if the same hash exists across multiple ServiceNow instances.

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