The NetworkMessageis a container for DataSetMessagesand includes information shared between DataSetMessages. This information consists of:

PublisherIdIdentifies the Publisher.

Security dataOnly available for encodings that support message security. The relevant information is specified in the message mapping.

Promoted fieldsSelected fields out of the DataSetalso sent in the header.

PayloadOne or more DataSetMessages.

The payload, consisting of the DataSetMessageswill be encrypted in accordance with the configured message security. Individual fields of a DataSetMessagecan be marked as being “promoted fields”. Such fields are intended for filtering or routing and therefore are never encrypted. How and where the values for promoted fields are inserted depends on the NetworkMessageformat and the used protocol. The NetworkMessageheader is not encrypted to enable efficient filtering.