When unregistering a resource in the MMR, if the address targets an alias then we should just 'ignore' the unregistering of the submodel ---------------------------------------------------------------------------------------------------------------------------------------- Key: WFCORE-1869 URL: https://issues.jboss.org/browse/WFCORE-1869 Project: WildFly Core Issue Type: Bug Components: Domain Management Affects Versions: 3.0.0.Alpha9 Reporter: ehsavoie Hugonnet Assignee: ehsavoie Hugonnet When unregistering the submodel of a resource, if it targets an alias with children the operation will fail like this: java.lang.IllegalArgumentException: WFLYCTL0277: An alias is already registered at location '/subsystem=infinispan/cache-container=*/distributed-cache=*/file-store=FILE_STORE': java.lang.IllegalArgumentException: WFLYCTL0277: An alias is already registered at location '/subsystem=infinispan/cache-container=*/distributed-cache=*/file-store=FILE_STORE'         at org.jboss.as.controller.registry.AliasResourceRegistration.alreadyRegistered(AliasResourceRegistration.java:291)         at org.jboss.as.controller.registry.AliasResourceRegistration.unregisterSubModel(AliasResourceRegistration.java:123)         at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)         at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)         at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)         at org.jboss.as.controller.registry.ConcreteResourceRegistration.unregisterSubModel(ConcreteResourceRegistration.java:261)         at org.jboss.as.controller.extension.ExtensionRegistry.removeExtension(ExtensionRegistry.java:341) We should ignore the removal of the children of an alias resource registration.