Elytron subsystem attributes with a default value should not be configured as required -------------------------------------------------------------------------------------- Key: WFLY-8004 URL: https://issues.jboss.org/browse/WFLY-8004 Project: WildFly Issue Type: Bug Components: Domain Management, Security Reporter: Brian Stansberry Assignee: Brian Stansberry A number of elytron subsystem attributes are configured as being required even though they have a default value (which implies not requiring a user-provided setting). Once WFCORE-2249 is fixed which results in proper validation of complex object attributes, this bug results in the server failing to boot: {code} 2017-01-31 12:28:04,055 ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 13) WFLYCTL0013: Operation ("add") failed - address: ([ ("subsystem" => "elytron"), ("mechanism-provider-filtering-sasl-server-factory" => "elytron") ]) - failure description: "WFLYCTL0155: 'version-comparison' may not be null" {code} Simple fix, just change the definition. I found 13 attributes like this.