If I create a Java application I can run a BAPI without problem. If I want to execute that same BAPI inside a Servlet like a Webservice, it gives me an error when trying to load the SessionManagerConfig class. java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1365) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1188) at org.hibersap.configuration.xml.SessionManagerConfig.<clinit>(SessionManagerConfig.java:52)</clinit>...