Hi @khushboo.kumari

As outlined in the Concepts Guide, section 3.2.8 Private Streams:

Using a Private Stream, a consumer application can create a virtual private connection with an interactive provider. This virtual private

connection can be either a direct connection, through the Refinitiv Real-Time Distribution System, or via a cascaded set of platforms.

I would refer you to the documentation for details.
https://developers.refinitiv.com/en/api-catalog/refinitiv-real-time-opnsrc/rt-sdk-java/documentation#message-api-java-development-and-configuration-guides-with-examples

or here:

https://github.com/Refinitiv/Real-Time-SDK/tree/master/Java/Ema/Docs