3518884 - Error while loading Message Monitor: Monitor Messages Next Steps Create CSS ticket in component BC-NWA-XPI

You are getting the following error when trying to access Message Monitor on SAP PO system:

Error while loading Message Monitor: Monitor Messages Next Steps Create CSS ticket in component BC-NWA-XPI in opening Message Monitor: Monitor Messages.:

Error loading embedded application (component - com.sap.tc.lm.itsam.co.ui.xi.msg.ximessagedetailed.XIMessageDetailed.
[EXCEPTION]
com.sap.tc.webdynpro.services.sal.deployment.core.ClassLoaderException: Cannot access object class loader for deployable object sap.com/tc~lm~itsam~co~ui~xi~msg~wd.
at com.sap.tc.webdynpro.serverimpl.wdc.deployment.DeployableObject.getClassLoader(DeployableObject.java:105)
at com.sap.tc.webdynpro.serverimpl.core.repository.AbstractServerRepository.getDeployableObjectClassloader(AbstractServerRepository.java:125)

[...]

SAP NetWeaver 7.5

Message Monitor,Error while loading Message Monitor, Monitor Messages Next Steps Create CSS ticket in component BC-NWA-XPI, Error loading embedded application, com.sap.tc.lm.itsam.co.ui.xi.msg.ximessagedetailed.XIMessageDetailed,
com.sap.tc.webdynpro.services.sal.deployment.core.ClassLoaderException: Cannot access object class loader for deployable object sap.com/tc~lm~itsam~co~ui~xi~msg~wd, Configuration Tasks ,Wizards , KBA , BC-NWA-XPI , Process Integration (PI) Monitoring , Problem