Is there a unique ID assigned to each forwarder to help me determine from which forwarder certain indexed data belongs to?

Hi, I have set up multiple forwarders sending events to a remote indexer. I am going to use the indexed data for further processing,. I wanted to know if there is a unique id assigned to each forwarder which will help me in knowing from which forwarder that indexed data belongs to. Thanks, Saravana Prabhu K