Trying to access ESB queues and topic by creating durable subscriber but unable to do so as I am getting the below error

javax.naming.CommunicationException: JNDI setup failed on RNAME=nsps://Server:port [Root exception is com.pcbsys.nirvana.client.nRealmUnreachableException: Realm is currently not SSL exception received when connecting to - [nsps://Server:port/] (check cause for underlying exception)]

Though my reply on this reference post below (see points #3 and #4), was for Enterprise Manager, your issue seems to be about IS ← → UM connectivity than anything else from the error.