1943282 - NWA is not accessible (500 internal server error) due to missing "sap.com~tc~lm~itsam~co~ui~nwa~localnavigation~wd.jar" jar file

• When you access to NWA it failed to open but given with a 500 internal server error on the browser page.
• However, other application links just work fine like: /irj/portal, /useradmin etc.
• Chiefly, this issue always happens after an abnormal system migration using a non-standard SAP system migration process.
• In the latest defaulltrace.trc you are able to find below exception:
  ------------------------------------------------------------------------------
  Exception occured during processing of Web Dynpro application sap.com/tc~lm~itsam~co~ui~nwa~localnavigation~wd/NWAApp. See exception stacktrace for details.
  [EXCEPTION]
  com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Exception was thrown in preprocessing phase of application session ApplicationSession(id=36d8cad2387511e3c87200000075d442, name=com.sap.tc.lm.co.ui.nwa.localnavigation.NWAApp). The causing exception is nested
  
  Caused by: java.lang.ClassNotFoundException: com.sap.tc.lm.co.ui.nwa.localnavigation.wdp.InternalLocalNavigationComp ------------------------- Loader Info ------------------------- ClassLoader name: [sap.com/tc~lm~itsam~co~ui~nwa~localnavigation~wd] Living status: alive Direct parent loaders: [system:Frame] [service:servlet_jsp] [service:ejb] [library:engine.security.lib.facade] [sap.com/tc~wd~api] [sap.com/tc~lm~webadmin~mainframe~persist~ear] [sap.com/tc~lm~webadmin~mainframe~wd] [sap.com/tc~lm~itsam~ui~mainframe~wd] Resources: /usr/sap/PIP/DVEBMGS00/j2ee/cluster/apps/sap.com/tc~lm~itsam~co~ui~nwa~localnavigation~wd/servlet_jsp/webdynpro/resources/sap.com/tc~lm~itsam~co~ui~nwa~localnavigation~wd/root/WEB-INF/lib/sap.com~tc~lm~itsam~co~ui~nwa~localnavigation~wd.jar
  

  [EXCEPTION]
  java.io.FileNotFoundException: /usr/sap/PIP/DVEBMGS00/j2ee/cluster/apps/sap.com/tc~lm~itsam~co~ui~nwa~localnavigation~wd/servlet_jsp/webdynpro/resources/sap.com/tc~lm~itsam~co~ui~nwa~localnavigation~wd/root/WEB-INF/lib/sap.com~tc~lm~itsam~co~ui~nwa~localnavigation~wd.jar
  ------------------------------------------------------------------------------

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• NetWeaver Java PI 7.1, 7.11
• NetWeaver Java CE 7.1 and onwards releases
• Enterprise Portal

SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver Composition Environment 7.1 ; SAP NetWeaver Composition Environment 7.2 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 1 for SAP NetWeaver Composition Environment 7.1

NWA, NetWeaver Administration, NWA not accessible, NWA is not working, problem when accessing NWA, NWA error, 500, 500 internal server error, 500 error, java.io.FileNotFoundException, sap.com~tc~lm~itsam~co~ui~nwa~localnavigation~wd.jar, jar file missing, Caused by: com.sap.tc.webdynpro.services.sal.deployment.core.StartStopException: Failed to start the deployable object sap.com/tc~lm~itsam~co~ui~nwa~localnavigation~wd , KBA , BC-NWA-INC-UIF , UI Framework , Problem