Unable to generate access token for Powerbi - powerbi

Question

My ask is to generate a token for Power Bi so to achieve it I created an application for organization by selecting Embedded for your organization
So, to integrate with Azure AD created the application in Azure AD.
The endpoint I used is POST: https://login.microsoftonline.com/common/oauth2/token
and in the body tab, I gave the below inputs:
data: {
grant_type: password
scope:
resource:
client_id:
username:
password:
}
My requirement is to generate token with ROPC authentication flow only.
This is the page I am referring to Solved: Re: How to generate the authorization code and the... - Microsoft Power BI Community
But after hitting send got this error:
{
"error": "invalid_request",
"error_description": "AADSTS900144: The request body must contain the following parameter: 'grant_type'.\r\nTrace ID: \r\nCorrelation ID: \r\nTimestamp: 2022-09-25 13:40:05Z",
]
Not sure what am I missing in configuring the application or postman. Any suggestions?

Answer 1

I tried to reproduce the same in my environment and got the same error as below:
POST: https://login.microsoftonline.com/common/oauth2/token
data: {
grant_type: password
scope: openid
resource: https://analysis.windows.net/powerbi/api
client_id: ******
username: ******
password: ******
}
If your application is not public, then add client_secret parameter like below:
To resolve the error, add the parameters in Body tab -> x-www-form-urlencoded
I am able to generate the access token successfully like below: