If you see 'Another institution is using this domain' when you turn on federated authentication

If more than one Apple School Manager organization has Managed Apple IDs in a single domain, the domain can't be used for federated authentication at this time.

This article is intended for system administrators.

When you turn on federation, Apple School Manager checks if there are are any existing Apple IDs in your domain. If there are any Managed Apple IDs in your domain that were created in a different Apple School Manager organization, you'll see a message that says "Another institution is using this domain".

This document will be updated as more information becomes available.

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