Broker issue

We are seeing this message in the server log of one of our integration servers frequently.

IntegrationServer is connected to the Broker,and there were issues with the Broker Connectivity from this server.

[ISS.0099.0011D] Broker Transport Factory unable to retrieve password for handle wm.is.admin.brokerTransport.default

Can some one help me with this, does it have anything to do with publisher.cnf

Thanks in advance,
Pola