Symptom:
Error while using Web Services. Throws this error for any request

Error 404: SRVE0203E: Servlet [XFireServlet]: org.codehaus.xfire.transport.http.XFireConfigurableServlet was found, but is missing another required class. 
SRVE0206E: This error typically implies that the servlet was originally compiled with classes which cannot be located by the server. 
SRVE0187E: Check your classpath to ensure that all classes required by the servlet are present.SRVE0210I: This problem can be debugged by recompiling the servlet using only the classes in the application's runtime classpath 
SRVE0234I: Application classpath=[/opt/app/p1nrc1m3/was/was61/profiles/node/installedApps/NEWSCALEREQCNTRPROD/ServiceLink.ear/ISEE.war/WEB-INF/classes:/opt/app/p1nrc1m3/was/was61/profiles/node/installedApps/NEWSCALEREQCNTRPROD/ServiceLink.ear/ISEE.war/WEB-INF/lib/adapter_db.jar:/opt/app/p1nrc1m3/was/was61/profiles/node/installedApps/NEWSCALEREQCNTRPROD/ServiceLink.ear/ISEE.war/WEB-INF/lib/adapter_dummy.jar:/opt/app/p1nrc1m3/was/was61/profiles/node/installedApps/NEWSCALEREQCNTR

Conditions:
Upgraded to 9.1 SP3 or new Install for 9.1 SP3