Inconsistent Jacorb configuration

this config:


 <subsystem xmlns="urn:jboss:domain:jacorb:1.1">
                <orb>
                    <initializers security="on"/>
                </orb>
                <poa>
                    <request-processors pool-size="2"/>
                </poa>
                <naming export-corbaloc="off"/>
            </subsystem>
            <subsystem xmlns="urn:jboss:domain:jaxrs:1.0"/>
            <subsystem xmlns="urn:jboss:domain:jca:1.1">
                <archive-validation enabled="true"/>
                <bean-validation enabled="true"/>
                <default-workmanager>
                    <short-running-threads>
                        <core-threads count="50"/>
                        <queue-length count="50"/>
                        <max-threads count="50"/>
                        <keepalive-time time="10" unit="seconds"/>
                    </short-running-threads>
                    <long-running-threads>
                        <core-threads count="50"/>
                        <queue-length count="50"/>
                        <max-threads count="50"/>
                        <keepalive-time time="10" unit="seconds"/>
                    </long-running-threads>
                </default-workmanager>
            </subsystem>


leads to :


[Host Controller] Message: JBAS014724: Missing required attribute(s): POA_REQUEST_PROC_MAX_THREADS
[Host Controller] 	at org.jboss.as.controller.parsing.ParseUtils.missingRequired(ParseUtils.java:134) [jboss-as-controller-7.1.0.Final-SNAPSHOT.jar:7.1.0.Final-SNAPSHOT]
[Host Controller] 	at org.jboss.as.jacorb.JacORBSubsystemParser.parseAttributes(JacORBSubsystemParser.java:683)
[Host Controller] 	at org.jboss.as.jacorb.JacORBSubsystemParser.parsePOAConfig(JacORBSubsystemParser.java:399)
[Host Controller] 	at org.jboss.as.jacorb.JacORBSubsystemParser.readElement_1_1(JacORBSubsystemParser.java:185)
[Host Controller] 	at org.jboss.as.jacorb.JacORBSubsystemParser.readElement(JacORBSubsystemParser.java:91)
[Host Controller] 	at org.jboss.as.jacorb.JacORBSubsystemParser.readElement(JacORBSubsystemParser.java:62)
[Host Controller] 	at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:100) [staxmapper-1.0.0.Final.jar:1.0.0.Final]