Because Decorators may associate a DefaultJndiBindingPolicy with JBoss*BeanMetadata objects, and these objects must be Serializable, the DefaultJndiBindingPolicy implementations themselves must also be Serializable.

Else errors, as exhibited by Seam AS TestSuite org.jboss.test.deployers.seam.test.SeamNumberguessExampleUnitTestCase.testExample

java.io.NotSerializableException: org.jboss.metadata.ejb.jboss.jndipolicy.plugins.BasicJndiBindingPolicy
...
at org.jboss.deployers.plugins.attachments.AttachmentsImpl.writeExternal(AttachmentsImpl.java:145)

Targeted for Beta30.