This configuration is invalid (but the part that checks it is the outstanding issue in JBCL). acme1 exports scott version 1 and ales version 1 acme2 wants to import ales version from acme1 but it also wants to scott version 3 Tthis will lead to incompatibilities between the versions of scott in the linked classloaders. acme1 and acme2 are in the same "classloading space" so they must agree on a common instance of the classes in the scott package. It should be failing at deployment time with an "conflicting package resolution" error for the scott package. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4150294#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...