How to get API Bearer Token for Power BI Admin apis

[Anonymous]

I am trying to use https://login.microsoft.com/ <tenet id>/oauth2/token to get access token for Power BI Admin apis.   

I have set up a application and security group in AD and granted all the read access required.    I can paste in a token into api call and it works.  I can use the above api and return an access token in Postman.   How can do it in Power BI using an Service Principal as  documented in https://docs.microsoft.com/en-us/power-bi/admin/read-only-apis-service-principal-authentication    I get error message "We couldn't authenicate with credentials provided. Please try again. "    I am using Anonymous  Access , it only offers 2 options 

https://login.microsoft.com/ <tenet id>/oauth2 

https://login.microsoft.com/ <tenet id>/oauth2/token

Any suggestions would be helpful.     

[Sayantan]

You have said -

I am trying to use https://login.microsoft.com/ <tenet id>/oauth2/token to get access token for Power BI Admin apis.   

I have set up a application and security group in AD and granted all the read access required.    I can paste in a token into api call and it works.  I can use the above api and return an access token in Postman.

How to do it ?

[lbendlin · Accepted solution]

@Anonymous  Here's one detailed explanation

Call Power BI Rest API with Dynamic Access Token From Power BI Desktop |Power BI Rest API | Part Two - YouTube

[Anonymous]

Thank you for replying.   That is using username and password, I didn't mention that I was trying to use Service Principal set up with application permission and as security group. 

[lbendlin]

Accessing API and web service data using Power Query - by Chris Webb - YouTube

Minute 37:00

[Anonymous]

Thanks for reply.   Again I am trying to use Service Principal to connect not my username and password.