Hi, I'm calling a webservice with a null pointer exception as a result: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException at fh.a(SourceFile:76) at com.mendix.core.Core.importXmlStream(SourceFile:1748), etc. The XML-request must looks like: <soapenv:envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:typ="http://oracle.com/determinations/server/10.0/server/types"> <soapenv:header/> <soapenv:body> <typ:list-rulebases-request/> </soapenv:body> </soapenv:envelope> What do I wrong? Is there a way to show the XML-request send by Mendix?