The data Topic has the form:

<Prefix>/<Encoding>/data/<PublisherId>/<WriterGroup>[/<DataSetWriter>]

The <PublisherId> Topic level is the PublisherId for the application sending the messages.

The <WriterGroup> Topic level is the name of a WriterGroup within the Publisher.

The <DataSetWriter> Topic level is the name of a DataSetWriter within the WriterGroup. If no QueueName is specified at the DataSetWriter level then the QueueName in WriterGroup TransportSettings is used and the DataSetWriter name is not part of the Topic.

The data Topic level is the default if the system owner does not have their own Topic tree. The Topic actually used is specified in the Connection Message as QueueName in the DataSetWriter or WriterGroup TransportSettings.

The messages are instances of the DataSetMessage MessageType (see 7.2.2).

The corresponding PubSubConnection Messag e is sent to the Topic with the same <Prefix>, <Encoding> and <PublisherId>. The PubSubConnection specifies the WriterGroups and DataSetWriters for a Publisher.