Hello, I have developed web service using the following things, 1. NetBeans IDE 5.0 Beta version 2. Sun Application Server 3. J2EE 1.4 Specification 4. The JSR for web service in J2EE 1.4 platform is JSR 109. I think it is the latest version of JSR for web service. The service developed is not getting deployed on tomcat. But, i could deploy the Client on Tomcat and access the Web Service running on Sun Application Server. I tried to deploy the webservice on tomcat in other machine, but it is nto working. I like to know how achive the compatibility between different server while developing the web service. I saw that in JWSDP 1.6 samples there is a fiel called jaxrpc-ri.xml and in the webservice i created i am getting webservices.xml. I think it is on JSR 101, is there any incompatibility during deployment in these two standards. Which is the latest and which i should learn, Help me out, please.