When using a VB Client (VB 2005/MS SOAP SDK 3.0) to jbossws (v1.0.3 which comes from jboss 4.0.5) the parameters are not correctly passed when jbossws waits for a parameter named String_1, it receives a parameter named SOAPSDK1:String_1 , and followed by xmlns:SOAPSDK=<url to ws namespace> jbossws rejects this as a SOAP fault There is a workaround which is to use MSSOAP lowlevel API as described in a former post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a... I guess that this xmlns construct is authorized by the specifications, and that jbossws should be configured to accept it. Is that correct ? Is there a clean way to use the M$ high level API ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4027860#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...