2739457 - BPM Error: Technical difficulties were experienced during process execution.

While trying to start a new instance of a BPM process model, the start fails with the following error: com.sap.engine.interfaces.webservices.runtime.RuntimeProcessException: Technical difficulties were experienced during process execution

The following error can be found in the Default Trace file:

#Error#com.sap.engine.services.webservices.espbase.server.runtime.RuntimeProcessingEnvironment#
#BC-ESI-WS-JAV-RT#webservices_lib#C0000A640A345F8A00000002000096D1#3898450000180356#sap.com/com.sap.aii.proxy.app#com.sap.engine.services.webservices.espbase.server.runtime.RuntimeProcessingEnvironment#Administrator#69615#JTA Transaction : 737513#6CD04D37115411E9ACF80050568A3130#6cd04d37115411e9acf80050568a3130#EDAEA787134B11E999320000003B7C53#0#MS Queue Worker [JPRRecv]#Plain##
process()
[EXCEPTION]
com.sap.engine.interfaces.webservices.runtime.RuntimeProcessException: Technical difficulties were experienced during process execution.
at com.sap.glx.adapter.app.ucon.UnifiedConnectivityAdapter.invokeProvisionedMethod(UnifiedConnectivityAdapter.java:1045)
at com.sap.glx.adapter.app.ucon.wsprov.GalaxyImplementationContainer.invokeMethod(GalaxyImplementationContainer.java:83)
at com.sap.engine.services.webservices.espbase.server.runtime.RuntimeProcessingEnvironment.process0(RuntimeProcessingEnvironment.java:710)
at com.sap.engine.services.webservices.espbase.server.runtime.OnewaySyncProcessor.process(OnewaySyncProcessor.java:24)
at com.sap.engine.services.webservices.espbase.server.runtime.RuntimeProcessingEnvironment.preProcess(RuntimeProcessingEnvironment.java:659)

...

Caused by: java.security.AccessControlException: User 'Guest' does not have permission with name 'CLUSTER_COMMUNICATION' of type 'com.sap.glx.core.api.BPMCorePermission'
at com.sap.glx.core.resource.impl.j2ee.BPMCorePermissionCheckerImpl.checkBPMCorePermissionOfCurrentUser(BPMCorePermissionCheckerImpl.java:46)
at com.sap.glx.core.resource.impl.j2ee.ClusterCommunicatorImpl.checkClusterCommunicationPermission(ClusterCommunicatorImpl.java:67)
at com.sap.glx.core.cluster.CollectiveIndexControl.claim(CollectiveIndexControl.java:847)
...

• SAP NetWeaver 7.3
• SAP Enhancement Package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.4
• SAP NetWeaver 7.5

com.sap.glx.core.kernel.api.KernelException: com.sap.glx.core.dock.api.StorageException: Unable to claim storage group, com.sap.glx.core.kernel.api.TransitionRollbackException: Exception during prepare, rolling back, , KBA , BC-BMT-BPM-MON , Process Monitoring , Problem