I have some java developers that want to be able to use java proxies to receive information from XI. So the message interface in XI is inbound. Generating the actual jar files for the message interfaces is not a problem, however they indicated that a .SCA or .ear is needed on the java servers that want to communcate with the XI server. so they wanted me to find out which .sca or .ear file should be deployed on the other non-sap servers. Please keep in mind that I am a newbie to the java world you answer, so I may have gotten some of the above wrong. Thanks alot! If I am going the wrong path, please redirect me, I have read the online docs for this.