Dell Unity: Failed to Add Role Mapping for LDAP User When Forest Level Authentication Is Configured

Summary: Customer configured forest level LDAP authentication on Unity for UI management. The LDAP connection was verified OK, but customer was unable to add role mapping for LDAP users. (User Correctable) ...

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Symptoms

Customer configured forest level LDAP authentication on LDAP server port 3268 for Unisphere management. Customer followed the Security Configuration Guide to specify userPrincipalName in the User ID Attribute field in the Advanced window.

Dell EMC Unity Family Security Configuration Guide (delltechnologies.com)

Security Configuration Guide

When trying to add LDAP user in Users and Groups --> User Management --> Manage Users & Groups, the following errors were received.
add LDAP user in Users and Groups

 

Cause

When forest level LDAP authentication is configured, the username of the LDAP user for role mapping should be configured in the format of <username>@<domain> which is exactly the userPincipalName that customer configures for the user in the LDAP server.

 

Resolution

If the Windows domain controller is the LDAP server, the userPrincipalName can be retried from user's properties using Active Directory Users and Computers.

Note: The Advanced Features in View tab must be enabled to show the Attribute Editor of the user.
Active Directory Users and Computers

 

Affected Products

Dell EMC Unity
Article Properties
Article Number: 000203550
Article Type: Solution
Last Modified: 03 حزيران 2026
Version:  5
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