Did you manage to solve this?I can also test my WS through Soap-UI and it fails just like wM IS (8.2). But if I chose “Enable WS-reliable messaging” in Soap-UI it succeeds. Where can I set this option inside wM Designer?//HyuiEDIT:It seems it was not the “Enable WS-reliable messaging” that is the problem but instead the WS-A Adressing version.