org.jboss.deployers.spi.DeploymentException: Error deploying abc.jar: message destination name (/key) is null         at org.jboss.ejb3.deployers.Ejb3Deployer.deploy(Ejb3Deployer.java:196)         at org.jboss.ejb3.deployers.Ejb3Deployer.deploy(Ejb3Deployer.java:99)         at org.jboss.deployers.vfs.spi.deployer.AbstractVFSRealDeployer.internalDeploy(AbstractVFSRealDeployer.java:45)         at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)         at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)         at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)         at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)         at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1210)         at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)         at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)         at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)         at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)         at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)         at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)         at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)         at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)         at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:361)         at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)         at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)         at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)         at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)         at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)         at org.jboss.system.server.profileservice.repository.AbstractProfileService.activateProfile(AbstractProfileService.java:306)         at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:271)         at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)         at org.jboss.Main.boot(Main.java:221)         at org.jboss.Main$1.run(Main.java:556)         at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.IllegalArgumentException: message destination name (/key) is null         at org.jboss.metadata.javaee.support.AbstractMappedMetaData.get(AbstractMappedMetaData.java:109)         at org.jboss.metadata.ejb.jboss.JBossAssemblyDescriptorMetaData.getMessageDestination(JBossAssemblyDescriptorMetaData.java:382)         at org.jboss.ejb3.Ejb3DescriptorHandler.addMessageDestinationAnnotations(Ejb3DescriptorHandler.java:1897)         at org.jboss.ejb3.Ejb3DescriptorHandler.addEjbAnnotations(Ejb3DescriptorHandler.java:1377)         at org.jboss.ejb3.Ejb3DescriptorHandler.addDescriptorAnnotations(Ejb3DescriptorHandler.java:922)         at org.jboss.ejb3.Ejb3DescriptorHandler.addDescriptorAnnotations(Ejb3DescriptorHandler.java:899)         at org.jboss.ejb3.Ejb3DescriptorHandler.getStatelessContainer(Ejb3DescriptorHandler.java:514)         at org.jboss.ejb3.Ejb3AnnotationHandler.getContainers(Ejb3AnnotationHandler.java:203)         at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:718)         at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:669)         at org.jboss.ejb3.Ejb3Deployment.deployUrl(Ejb3Deployment.java:651)         at org.jboss.ejb3.Ejb3Deployment.deploy(Ejb3Deployment.java:614)         at org.jboss.ejb3.Ejb3Deployment.create(Ejb3Deployment.java:491)         at org.jboss.ejb3.deployers.Ejb3Deployer.deploy(Ejb3Deployer.java:182)         ... 34 more