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This brings you to a new Window where you can select an Ignition Project or create a new one.  Create a new project by giving it a name and clicking 'Create New Project'.

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In this example we are going to use the "default" tag provider within Ignition Enterprise.  Expand 'All Providers' in the Tag Browser and select 'default' as shown below. 

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For the 'default' provider, create TestGroup/TestNode/TestDevice directory tree under 'Edge Nodes' and leave those folders empty.

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Now, expand the 'MQTT Transmission' folder as shown below and click the 'Refresh' checkbox.


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Pressing the 'Refresh' checkbox causes the Transmitter to publish NBIRTH and DBIRTH certificates as shown below:

2018-07-20 16:46:11,438 INFO --- MqttFX ClientModel : messageArrived() with topic: spBv1.0/TestGroup/NBIRTH/TestNode
2018-07-20 16:46:11,439 INFO --- MqttFX ClientModel : messageArrived() added: message #9 to topic 'spBv1.0/TestGroup/NBIRTH/TestNode'
2018-07-20 16:46:11,443 INFO --- MqttFX ClientModel : messageArrived() with topic: spBv1.0/TestGroup/DBIRTH/TestNode/TestDevice
2018-07-20 16:46:11,443 INFO --- MqttFX ClientModel : messageArrived() added: message #10 to topic 'spBv1.0/TestGroup/DBIRTH/TestNode/TestDevice

Note that the 'Engine Nodes' folder under 'MQTT Engine' is no longer empty:

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