Currently the Relay will send all data streams to all routed destination. This does not allow customers to have control over what data streams go to a specific destination. The only workaround is to have independent Connector/Relay pairs with specific configurations, which does not scale up if there are several Connectors since only one specific Connector/Relay can exist on a single node.
For example: Let's say there are two Connectors (A and B), routed to a Relay with two destinations (1 and 2). The current implementation of the Relay will send both Connector A and B data to both Destinations 1 and 2. The request here is to allow end users to be able to configure Connector A to only send data to Destination 1 and Connector B to only send data to Destination 2 in the DCM.
In addition, if a Connector has multiple data sources, end users should be able to select the destination for any given data source. For example: Let's say a Connector has two data sources (A and B) and is routed to a Relay with two destinations (1 and 2). The end users should be able to configure data source A to only send data to destination 1 and data source B to only send data to destination 2.
This is similar to Enhancement Request: Support for more than one data source (https://feedback.osisoft.com/forums/555139-pi-connectors/suggestions/39122209-support-for-more-than-one-data-source) except this referenced enhancement request is specifically for the PI System Connector while this enhancement request is for all Relay-enabled Connectors.