Access token and refrsh token

[nameisnani]

Hi Team , 

can anyone please help me here I want generate access token and refresh token 

Tired with POSTMAN tool .

I am not able to get response , 

The User which I have used here . roles are be like . 

can anyone please help me here . I need access token and refresh token . Please help me here 

[Hayo Lubbers · Accepted solution]

You have a typo in client_id in your postman variables