Assume that you deploy Directory Synchronization for Office 365 in a Microsoft Exchange Server 2013 environment. When you use the New Remote Mailbox wizard in Exchange Admin Console (EAC), the organizational unit picker is not available.
This issue occurs because of a logic issue in Exchange Server 2013.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2983161 - Last Review: Sep 15, 2015 - Revision: 1
Microsoft Exchange Server 2013 Enterprise, Microsoft Exchange Server 2013 Standard Edition