Mehdi, My guess is that the field being reported is perhaps in dependency of a bean, rather than the bean itself. But that's just a shot in the dark. The best way to move this forward is to duplicate your problem using an Arquillian test case. The cdi project in the Arquillian Showcase is setup to run tests on WebLogic 12.1.x. You can add your test case in there and run it to investigate. https://github.com/arquillian/arquillian-showcase Follow the README for instructions about how to use the showcase. To run a test on WebLogic Server 12.1, you need to: 1. Update the location of your weblogic installation in cdi/src/test/resources/arquillian.xml 2. uncomment the line in cdi/src/test/resources/arquillian.launch 3. start WebLogic Server 4. run this command to execute a test: mvn test -Parq-wls-remote-12.1 -Dtest=GreeterManagedBeanTestCase If you have trouble, please ask on the Arquillian forums: http://community.jboss.org/en/arquillian Good luck! -Dan On Sat, May 19, 2012 at 6:05 AM, Mehdi Heidarzadeh <heidarzadeh2(a)gmail.com&gt;wrote: -- Dan Allen Principal Software Engineer, Red Hat | Author of Seam in Action Registered Linux User #231597 http://google.com/profiles/dan.j.allen http://mojavelinux.com http://mojavelinux.com/seaminaction