Hi, i found a similar case with a Microsoft WCF client calling an Oracle WS: http://weblogs.asp.net/gsusx/archive/2006/10/20/WCF-Oracle-Application-Se... The last code listing contains a WS-Security request trace with an element KeyInfo without the ValueType attribute: | ... | <KeyInfo xmlns="http://www.w3.org/2000/09/xmldsig#"> | <o:SecurityTokenReference> | <o:Reference URI="#_1"/> | </o:SecurityTokenReference> | </KeyInfo> | ... | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4167276#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...