For compatibility with the Eclipse BPEL designer, jBPM BPEL supports an early draft of the WS-BPEL 2.0 specification instead of the approved standard. The schema accepted by the product can be found in jbpm-bpel.jar. Look for resource org/jbpm/bpel/xml/util/bpel_2_0.xsd. The documents you provided mostly adhere to the above schema, except for the bpel and plnk namespaces. In the BPEL document, replace: xmlns="http://docs.oasis-open.org/wsbpel/2.0/process/executable" with xmlns="http://schemas.xmlsoap.org/ws/2004/03/business-process/" In the WSDL document, replace: xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype" with xmlns:plnk="http://schemas.xmlsoap.org/ws/2004/03/partner-link/" This should fix the problem. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4093794#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...