Hi, you are getting a 400 bad request, which usually happens when your request structure is incorrect and the server can't understand it (from my experience, you usually get a 400 when your request is badly written)


Reading further, it seems the problem is on the grant_type field, check again if you are supposed to pass what you are currently passing on that field, or if that field is expecting something else

Tell me if this helped!
Cheers,
Paulo

Hi Erik,

Try changing the content-type to "application/json" as currently you have "application/x-www-form-urlencoded" that means you should send data something as below.and its telling the web server that you will be encoding the parameters in the URL or send the parameters something like below

Name=John+Smith&Age=23

In your case you are sending a JSON in your body and thats why server its not able to understand the parameters and is throwing error 

"The request body must contain the following parameter: 'grant_type'"

Best Regards

Devendra