"JBAS015970: Defer FIRST_MODULE_USE" message and "FIRST_MODULE_USE is missing" error deploying application on EAP 6

Issue

We are testing the upgrade of EAP from version 6.0 to 6.1.1 and the following error about missing dependencies has been encountered:

INFO |[org.jboss.as.server.deployment]|(ThreadId: MSC service thread 1-1)|JBAS015970: Defer FIRST_MODULE_USE for myapp.ear making it LAZY|#]
INFO |[org.jboss.as.server.deployment]|(ThreadId: MSC service thread 1-2)|JBAS015970: Defer FIRST_MODULE_USE for mywebapp.war making it PASSIVE|#]
INFO |[org.jboss.as.server.deployment]|(ThreadId: MSC service thread 1-3)|JBAS015970: Defer FIRST_MODULE_USE for jackson-core-asl-1.9.9-redhat-2.jar making it PASSIVE|#]
INFO |[org.jboss.as.server.deployment]|(ThreadId: MSC service thread 1-4)|JBAS015970: Defer FIRST_MODULE_USE for jackson-mapper-asl-1.9.9-redhat-2.jar making it PASSIVE|#]
ERROR|[org.jboss.as.server]|(ThreadId: host-controller-connection-threads - 1)|JBAS015870: Deploy of deployment "myapp.ear" was rolled back with the following failure message: {"JBAS014771: Services with missing/unavailable dependencies" => ["jboss.deployment.unit.\"myapp.ear\".FIRST_MODULE_USE is missing [jboss.module.spec.service.\"deployment.myapp.ear.jackson-core-asl-1.9.9-redhat-2.jar\".main, jboss.module.spec.service.\"deployment.myapp.ear.jackson-mapper-asl-1.9.9-redhat-2.jar\".main]"]}|#]