Dear Alejandro Thank you for your reply. I changed the name spaces which you sent me, but the problem didn't solve and the following error message was shown: partner link type not found (HelloWorld.bpel ) at /bpel:process/bpel:partnerLinks/bpel:partnerLink This name space has been removed from the bpel file as you suggest. Moreover, the name space of http://schemas.xmlsoap.org/ws/2004/03/business-process/property which should be replaced with http://docs.oasis-open.org/wsbpel/2.0/varprop was not available in the BPEL file. Thanks, Arman View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4121706#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...