Well I looked more into the code , have checked the testsuite also . I can see 1) predeterminedManagedObjects Attachment 2) transientAttachments Attachment 3) transientManagedObjects Attachment types present in the AbstractDeploymentContext . What does these types represent ? | Attachments are metadata associated with a deployment unit | Where do you specify this metadata , is this what is specified in the deploymentdescriptor ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3988753#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...