Hi Anil I should work and on the face of it what you have looks OK at first glance. I'll assume that you've used the Tuscany test interfaces/implementations with the correct callback annotations etc.
I'm looking at the web service binding at the moment so if you raise a JIRA (https://issues.apache.org/jira/browse/TUSCANY) against java-sca-20 for this I'll try running that sample with two composites and see what happens. Regards Simon -- Apache Tuscany committer: tuscany.apache.org Co-author of a book about Tuscany and SCA: tuscanyinaction.com