With the JTS integration into JBoss AS, the org.omg.CosTransactions classes provided in jbossjts-jacorb.jar located in the common/lib directory are also provided in jacorb.jar found in the server/${conf}/lib directory. The files in jbossjts-jacorb.jar are more recent but are showing serialversionUID mismatches while running one of the integration tests. How can the duplicate distribution of these classes provided by the separate projects be eliminated when integrated with JBossAS? A question for the IIOP project team as well but thought I'd start here as the JTS specification defines the use of CORBA OTS to ensure an interoperable implementation so makes sense to distribute with JTS too. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4215578#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...