Article ID: 2857385 - View products that this article applies to.
When you run the IdFix DirSync Error Remediation Tool in your on-premises Active Directory Domain Services (AD DS) environment, "duplicate" is displayed in the ERROR column for one or more objects.
This problem occurs if two or more objects have the same email address.
To resolve this problem, specify a unique email address for the object. To do this, follow these steps:
Still need help? Go to the Office 365 Community
(http://community.office365.com/)website or the Azure Active Directory Forums
Article ID: 2857385 - Last Review: July 9, 2014 - Revision: 6.0