Upgrade Error in Downtime - Restart instance services

Please Help with this Error:

We are doing EHP update for JAVA only system.

An error has occurred during the execution of the Restart instance services step.

Cannot restart service for instance 0 on host XXXXXXXXXX. Error while restarting the instance with number: 0 on host: XXXXXXXXXX using the SAPControl web service API. javax.xml.ws.soap.SOAPFaultException: Invalid Credential