Your mailbox {0} can't synchronize appointments, contacts, and tasks. Another Microsoft Dynamics 365 organization is configured ...

Your mailbox {0} can't synchronize appointments, contacts, and tasks. Another Microsoft Dynamics 365 organization is configured to the same Exchange email address specified in this mailbox {0}. Its last access time is {1}. Contact the user to see which organization should be the one to synchronize with this Exchange email address. The best practice is to overwrite the configuration when you test and enable the mailbox in your primary organization. Also, change the synchronization method for your mailbox in non-primary organizations to None.