Manual addition of AMQ server in JBoss ON inventory fails with message "Missing required property activemq.home"

Issue

• Manual addition of AMQ server in JBoss ON inventory fails with message "Missing required property activemq.home";
• Error message in the agent.log file:

ERROR [WorkerThread#0[10.11.12.13:28885]] (rhq.core.pc.inventory.InventoryManager)- Manual add failed for resource of type [ActiveMQ Server] and parent resource id [10921]
java.lang.reflect.UndeclaredThrowableException
    at com.sun.proxy.$Proxy73.discoverResource(Unknown Source)
    at org.rhq.core.pc.inventory.InventoryManager.discoverResource(InventoryManager.java:510)
    at org.rhq.core.pc.inventory.InventoryManager.manuallyAddResource(InventoryManager.java:953)
        ...
    at org.rhq.enterprise.communications.command.server.CommandProcessor.handleIncomingInvocationRequest(CommandProcessor.java:290)
    at org.rhq.enterprise.communications.command.server.CommandProcessor.invoke(CommandProcessor.java:184)
        ...
Caused by: java.lang.Exception: Discovery component invocation failed.
    at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ComponentInvocationThread.call(DiscoveryComponentProxyFactory.java:309)
        ...
Caused by: org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException: Missing required property activemq.home
    at org.jbosson.plugins.fuse.FuseServerDiscoveryComponent.discoverResource(FuseServerDiscoveryComponent.java:204)
        ...
    at org.rhq.core.pc.util.DiscoveryComponentProxyFactory$ComponentInvocationThread.call(DiscoveryComponentProxyFactory.java:305)
    ... 4 more