ExampleDS is requirement for applications that don't mandate it.

/subsystem=datasources/data-source=ExampleDS:write-attribute(name=enabled,value=false) :reload deploy ~/redhat/git/quickstart/logging/target/jboss-logging.war OUtcome: {"WFLYCTL0062: Composite operation failed and was rolled back. Steps that failed:" => {"Operation step-2" => {"WFLYCTL0412: Required services that are not installed:" => ["jboss.naming.context.java.jboss.datasources.ExampleDS"],"WFLY CTL0180: Services with missing/unavailable dependencies" => ["jboss.naming.context.java.module.jboss-logging.jboss-logging.DefaultDataSource is missing [jboss.naming.context.java.jboss.datasources.ExampleDS]"]} }} This will happen even with empty.war - which contain only index.html