OBIEE 12C - unable to Select User(recipient tab under Agent) by Display Name

RanaAshutosh-Oracle

In OBIEE 11g environment, we are able to search for recipient using both User ID and User Display Name (MS Active Directory).
OBIEE 11g will conduct the search using both UserID and User Display name as traced in 11g log file - search command issued was {call NQSSearchIdentities('BOTH','NAME_PATTERN=<supplied user name>*')} 

In 12c,  search command issued was {call NQSGetUsers('NAME_PATTERN='<supplied user name>*','DISPLAY_NAME','ssi')}

In OBIEE 11g environment, we are able to search for recipient using User Display Name (MS Active Directory) instead of just User/ID (Active Directory AD ID).

In OBIEE 12c, we are unable to search for recipient using User Display Name. The search returns no result unless we search by User ID.

Kindly suggest.