In LDAP attribute mapping, SMGRLoginName is by default mapped to the userprincipalName. If the SMGRLoginName mapped attribute is null for a given user in the LDAP and the auto configuration api is hit to fetch the user configuration, it results in failure.
Procedure
On the Avaya Aura® Device Services web administration portal, navigate to Server Connections > LDAP Configuration > Enterprise LDAP Server Configuration > Modify Attribute Mappings.
For the SMGRLoginName field under Enterprise Directory Mappings > Modify LDAP Attribute Mappings if the default value under the Custom Field Name column is userprincipalName:
Go to LDAP server and check the user configuration and the mapped attribute under userprincipalName.
If the attribute is blank, modify the mapping in the Avaya Aura® Device Services web administration portal.
