Hi again. I have just found it in the wsbpel-specification-draft. anonymous wrote : | The notion of < partnerLinks > is used to directly model peer-to-peer conversational partner relationships. < partnerLinks > define the shape of a relationship with a partner by defining the portTypes used in the interactions in both directions. However, the actual partner service may be dynamically determined within the process. WS-BPEL uses a notion of endpoint reference, manifested as a service reference | container <sref:service-ref>, to represent the data required to describe a partner service | endpoint. I just don't know how to put this into practice. Thanks, Jose Juan Avila View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4036159#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...