How to get Embedded token for RDL report which is published to power bi service

[powerbimaster]

I have a issue with RDL report which is published in one of our workspace, Here is the issue, When I try to get the embed token for RDL report by passing report id and workspace ID and AD authentication mechanism(User name , Password, Clientid, client secret, authority, resource url) it is not working. But, for normal power bi report it is working fine an dable to get embeded token, embedded url successfully. 

Please help me to get the embedded toke for RDL report. 

@PBI @microsoftpbi