The QueueName parameter with DataType String specifies the queue in the Broker that receives NetworkMessages sent by the Publisher for the DataSetWriter. This could be the name of a queue or topic defined in the Broker. This parameter is only valid if the NetworkMessages from the WriterGroup contain only one DataSetMessage.

If this String is not null, it overrides the QueueName of the WriterGroup transport settings.

The ResourceUri property of DataType String allows the transport implementation to look up the configured key from the corresponding KeyCredentialConfigurationType instance defined in OPC 10000-12 to use for authenticating access to the specified queue.

If this String is not null, it overrides the ResourceUri of the WriterGroup authentication settings.

The parameter AuthenticationProfileUri of DataType String allows the selection of the authentication protocol used by the transport implementation for authenticating access to the specified queue.

If this String is not null, it overrides the AuthenticationProfileUri of the WriterGroup transport settings.

The RequestedDeliveryGuarantee parameter with DataType BrokerTransportQualityOfService specifies the delivery guarantees that shall apply to all messages published by the DataSetWriter. The DataType BrokerTransportQualityOfService is defined in 6.4.2.2.5.

If the value is not NotSpecified_0, it overrides the RequestedDeliveryGuarantee of the WriteGroup transport settings.

If the selected delivery guarantee cannot be applied, the DataSetWriter shall set the state to Error_3.

For message mappings like UADP, the Subscriber needs access to the DataSetMetaData to process received DataSetMessages. The Publisher can provide the DataSetMetaData through a dedicated queue.

The parameter MetaDataQueueName with the DataType String specifies the Broker queue that receives messages with DataSetMetaData sent by the Publisher for this DataSetWriter. This could be the name of a queue or topic defined in the Broker.

Specifies the interval in milliseconds with Data Type Duration at which the Publisher shall send the DataSetMetaData to the MetaDataQueueName. A value of 0 or any negative value shall be interpreted as infinite interval.

The broker transport shall publish all messages with an expiration time that is equal or greater than this value.

If the update time is infinite, a broker transport shall attempt to negotiate message retention if possible. In this case the DataSetMetaData is only sent if the ConfigurationVersion of the corresponding DataSetMetaData is changed and DataSetWriters shall try to negotiate AtLeastOnce_2 or ExactlyOnce_4 delivery guarantees with the broker for any DataSetMetaData sent to ensure meta data is available to readers.

The DataSetWriterProperties settings apply also to DataSetMetaData sent to the queue named through the MetaDataQueueName parameter.

This Structure DataType is used to represent the Broker specific transport mapping parameters for DataSetWriters. It is a subtype of the DataSetWriterTransportDataType defined in 6.2.3.5.2.

The BrokerDataSetWriterTransportDataType is formally defined in Table 71.

Table 71 – BrokerDataSetWriterTransportDataType Structure

Name	Type	Description
BrokerDataSetWriterTransportDataType	Structure
queueName	String	Defined in 6.4.2.3.1.
resourceUri	String	Defined in 6.4.2.3.2.
authenticationProfileUri	String	Defined in 6.4.2.3.3.
requestedDeliveryGuarantee	BrokerTransportQualityOfService	Defined in 6.4.2.3.4.
metaDataQueueName	String	Defined in 6.4.2.3.5.
metaDataUpdateTime	Duration	Defined in 6.4.2.3.6.