Flex 3 error "Destination either does not exist or the destination has no channels defined"

services-config.xml :
 
<?xml version="1.0" encoding="UTF-8"?>
<services-config>
 
    <services>
        <service-include file-path="remoting-config.xml" />
        <service-include file-path="proxy-config.xml" />
        <service-include file-path="messaging-config.xml" />        
    </services>
 
    <security>
        <login-command class="flex.messaging.security.TomcatLoginCommand" server="Tomcat"/>
        <!-- Uncomment the correct app server
        <login-command class="flex.messaging.security.TomcatLoginCommand" server="JBoss">
		<login-command class="flex.messaging.security.JRunLoginCommand" server="JRun"/>        
        <login-command class="flex.messaging.security.WeblogicLoginCommand" server="Weblogic"/>
        <login-command class="flex.messaging.security.WebSphereLoginCommand" server="WebSphere"/>
        -->
 
        <!-- 
        <security-constraint id="basic-read-access">
            <auth-method>Basic</auth-method>
            <roles>
                <role>guests</role>
                <role>accountants</role>
                <role>employees</role>
                <role>managers</role>
            </roles>
        </security-constraint>
         -->
    </security>
 
    <channels>
        <channel-definition id="my-streaming-amf" class="mx.messaging.channels.StreamingAMFChannel">
            <endpoint url="http://{server.name}:{server.port}/{context.root}/messagebroker/streamingamf" class="flex.messaging.endpoints.StreamingAMFEndpoint"/>
        </channel-definition>
        
        <channel-definition id="my-amf" class="mx.messaging.channels.AMFChannel">
            <endpoint url="http://{server.name}:{server.port}/{context.root}/messagebroker/amf" class="flex.messaging.endpoints.AMFEndpoint"/>
        </channel-definition>
 
        <channel-definition id="my-secure-amf" class="mx.messaging.channels.SecureAMFChannel">
            <endpoint url="https://{server.name}:{server.port}/{context.root}/messagebroker/amfsecure" class="flex.messaging.endpoints.SecureAMFEndpoint"/>
            <properties>
                <add-no-cache-headers>false</add-no-cache-headers>
            </properties>
        </channel-definition>
 
        <channel-definition id="my-polling-amf" class="mx.messaging.channels.AMFChannel">
            <endpoint url="http://{server.name}:{server.port}/{context.root}/messagebroker/amfpolling" class="flex.messaging.endpoints.AMFEndpoint"/>
            <properties>
                <polling-enabled>true</polling-enabled>
                <polling-interval-seconds>4</polling-interval-seconds>
            </properties>
        </channel-definition>
 
        <!--
        <channel-definition id="my-http" class="mx.messaging.channels.HTTPChannel">
            <endpoint url="http://{server.name}:{server.port}/{context.root}/messagebroker/http" class="flex.messaging.endpoints.HTTPEndpoint"/>
        </channel-definition>
 
        <channel-definition id="my-secure-http" class="mx.messaging.channels.SecureHTTPChannel">
            <endpoint url="https://{server.name}:{server.port}/{context.root}/messagebroker/httpsecure" class="flex.messaging.endpoints.SecureHTTPEndpoint"/>
            <properties>
                <add-no-cache-headers>false</add-no-cache-headers>
            </properties>
        </channel-definition>
        -->
    </channels>
 
    <logging>
        <target class="flex.messaging.log.ConsoleTarget" level="Error">
            <properties>
                <prefix>[BlazeDS] </prefix>
                <includeDate>false</includeDate>
                <includeTime>false</includeTime>
                <includeLevel>false</includeLevel>
                <includeCategory>false</includeCategory>
            </properties>
            <filters>
                <pattern>Endpoint.*</pattern>
                <pattern>Service.*</pattern>
                <pattern>Configuration</pattern>
            </filters>
        </target>
    </logging>
 
    <system>
        <redeploy>
            <enabled>false</enabled>
            <!-- 
            <watch-interval>20</watch-interval>
            <watch-file>{context.root}/WEB-INF/flex/services-config.xml</watch-file>
            <watch-file>{context.root}/WEB-INF/flex/proxy-config.xml</watch-file>
            <watch-file>{context.root}/WEB-INF/flex/remoting-config.xml</watch-file>
            <watch-file>{context.root}/WEB-INF/flex/messaging-config.xml</watch-file>
            <watch-file>{context.root}/WEB-INF/flex/data-management-config.xml</watch-file>
            <touch-file>{context.root}/WEB-INF/web.xml</touch-file>
             -->
        </redeploy>
    </system>
 
</services-config>
 
messaging-config.xml :
 
<?xml version="1.0" encoding="UTF-8"?>
<service id="message-service" 
    class="flex.messaging.services.MessageService">
 
    <adapters>
        <adapter-definition id="actionscript" class="flex.messaging.services.messaging.adapters.ActionScriptAdapter" default="true" />
        <!-- <adapter-definition id="jms" class="flex.messaging.services.messaging.adapters.JMSAdapter"/> -->
    </adapters>
 
    <default-channels>
        <channel ref="my-polling-amf"/>
    </default-channels>
    
    <destination id="alarm-event-feed">
        <properties>
            <server>
                <allow-subtopics>true</allow-subtopics>
                <subtopic-separator>.</subtopic-separator>s
            </server>
        </properties>
        <channels>
			<channel ref="my-polling-amf"/>
        </channels>        
    </destination>
 
</service>

                                              

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client code :		        
                        private function initApp():void
			{
				consumers = new Object();
				eventList = new Object();
				items = new ArrayCollection();
				subscribe();
			}
						
			
			private function subscribe():void
			{
				var consumer:Consumer = new Consumer();
				consumer.channelSet = ServerConfig.getChannelSet("alarm-event-feed");
				consumer.destination = "alarm-event-feed";
				consumer.addEventListener(MessageEvent.MESSAGE, messageHandler);
				consumer.subscribe();
			}
					
			
			private function messageHandler(event:MessageEvent):void 
			{
				var newAlarmEvent:AlarmEvent = event.message.body as AlarmEvent;
				if (newAlarmEvent)
				{
					items.addItem(newAlarmEvent);	
				}
	        }
			
server side code :
 
private void updateAlarmFeed(AlarmEvent alarmEvent) {
		MessageBroker msgBroker = MessageBroker.getMessageBroker(null);
		String clientID = UUIDUtils.createUUID();
		AsyncMessage msg = new AsyncMessage();
		msg.setDestination("alarm-event-feed");
		msg.setClientId(clientID);
		msg.setMessageId(UUIDUtils.createUUID());
		msg.setTimestamp(System.currentTimeMillis());
		msg.setBody(alarmEvent);
		msgBroker.routeMessageToService(msg, null);
	}

                                              

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