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What should you do?
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Use the Transfer Tool for Unmanaged Users: Access Google Admin Console: Go to admin.google.com and sign in with your administrator account. Navigate to Tools: In the Admin console, go to "Tools" and then select "Transfer tool for unmanaged users." Enter Domain Information: Enter the domain name (madeupcorp.com) and verify the domain. List Unmanaged Users: The tool will generate a list of unmanaged users who are using their @madeupcorp.com email addresses. Send Transfer Requests: Send transfer requests to these users, prompting them to accept the transfer to the managed Google Workspace account. Follow Up: Ensure all users have accepted the transfer request to avoid any disruptions in accessing Google services with their corporate email addresses. Verify: Confirm that the transferred accounts are now managed under the Google Workspace domain. Reference Google Workspace Admin Help - Transfer tool for unmanaged users