Does anyone know how to consume a webservice running on WL8.1 with a jdk1.3 client. I've create the client using the cliengen ant task for the ws, how ever when I run it, it throws the following exception: Exception: java.lang.NoSuchMethodError at weblogic.xml.schema.binding.internal.TypeMappingEntryImpl.<init>(TypeMappingEntryImpl.java:61) at weblogic.xml.schema.binding.internal.XSDTypeMapping.addEntries(XSDTypeMapping.java:812) at weblogic.xml.schema.binding.internal.XSDTypeMapping.createPrimaryMapping(XSDTypeMapping.java:154) at weblogic.xml.schema.binding.internal.XSDTypeMapping.createInstance(XSDTypeMapping.java:138) at weblogic.xml.schema.binding.internal.XSDTypeMapping.<clinit>(XSDTypeMapping.java:118) at weblogic.xml.schema.binding.internal.TypeMappingFactoryBase.createDefaultMapping(TypeMappingFactoryBase.java:18) at weblogic.webservice.core.encoding.DefaultRegistry.<init>(DefaultRegistry.java:100) at weblogic.webservice.core.encoding.DefaultRegistry.<init>(DefaultRegistry.java:32) at weblogic.webservice.core.rpc.ServiceImpl.<init>(ServiceImpl.java:88) at client.mws.MiddlewareWS_Impl.<init>(MiddlewareWS_Impl.java:22) ... ...