Yes, "ResponseID" is the built-in embedded data that stores the response id, so we can pipe this in any other embedded data as ${e://Field/ResponseID}

Thanks a lot rondev for your help here. It worked.

@rondev how do we do this in case we are using imported response? 

i have tried using ${e://Field/ResponseID} when a survey is taken by a link etc. but i have noticed it doesnt get captured when the response is imported. Eg, when using a webservice element to import responses from SF