Getting the authentication token from LogicApp/Postman

Question

Hello fellas.

Usually I try not to bother anyone and try to find the solution on my own, but this time I got stuck.

I am developping the LogicApp to do some stuff in the Defender for Cloud. The issue I am facing is obtaining token from the AAD. This is how I call POST method from LogicApp:

I read somewhene that "resource" should not be a part of the body, but I get same result w/ or w/o it.

When I execute this method, I get en error:

{
  "error": "invalid_request",
  "error_description": "AADSTS900144: The request body must contain the following parameter: 'grant_type'.\r\nTrace ID: a0fb2806-95b8-491e-9927-bf4b7e0b0e00\r\nCorrelation ID: d6971532-4e0a-4457-87d6-0bc7c7ba0bd6\r\nTimestamp: 2023-07-28 09:06:32Z",
  "error_codes": [
    900144
  ],
  "timestamp": "2023-07-28 09:06:32Z",
  "trace_id": "a0fb2806-95b8-491e-9927-bf4b7e0b0e00",
  "correlation_id": "d6971532-4e0a-4457-87d6-0bc7c7ba0bd6",
  "error_uri": "https://login.microsoftonline.com/error?code=900144"
}

Funny thing is that there is 'grant_type' in the body.

Even more funny thing is that the method invoked from Postman, using same parameters and values work just fine:

Obviously I am missing something, but what?

Any help much appreciated!

Sascha

Answer 1

@Sascha On first look, I believe it might be because the header should be Content-Type instead of Content_Type perhaps.

Also, if you are using this token later in a HTTP Action, note that you could also explore using the Azure AD OAuth Authentication option of the action directly as well.