A custom BeanMetaDataFactory like:

@JBossXmlSchema(namespace="urn:jboss:proxied-mbean:1.0", elementFormDefault=XmlNsForm.QUALIFIED, replacePropertyRefs=true)
@XmlRootElement(name="proxied-mbeans")
@XmlType(name="proxiedMBeanType")
public class ProxiedMBeanMetaData implements Serializable, BeanMetaDataFactory
{

which has no ManagementObject annotation and does not have an InstanceClassFactory implementation registered, fails to be processed for its BeanMetaData components which can be annotated for management. There should be a container ManagedObject created for the factory with a beans property to contain the factory's managable components.