The root cause of your 500 error is “NoClassDefFoundError: com/softwareag/tamino/db/API/objectModel/dom/TDOMObjectModel”
As I understand it, your system classpath, %CLASSPATH%, is not relevant to Tomcat. He has his own classpath. This is set by setclasspath.bat if you’re running Tomcat normally, or in wrapper.properties if you’re using jk_nt_service to start Tomcat as a service.
Each application also has a separate classpath which is built at run time from the contents of tomcat_home/webapps/appname/web-inf/lib (for jar files)
and
tomcat_home/webapps/appname/web-inf/classes for class hierarchies.
The easiest answer: If you don’t have a tomcat_home/webapps/appname/web-inf/lib directory, just create one and put the TaminoAPI4J jar files into it.
#webMethods-Tamino-XML-Server-APIs#webMethods#API-Management