AuthorizationError.USER_PERMISSION_DENIED

[fp.mm...@gmail.com]

I'm trying to do my first AdWords API call and I get an error:

AuthorizationError.USER_PERMISSION_DENIED

This is my credentials:

1. Developer token - Production token from my MCC

2. Client customer Id - The test AdWords account ID under test MCC account

3. Client id - My id from google api console

4. Client secret - My secret from google api console

5. Refresh token - token which I get under Production MCC account

Why I get this error? I read about this on a forum and I understand - There is no link between the manager account authenticated in the request and the client account specified in the headers.

When I try to change Refresh token which I get under Test MCC account I get new error:

error: 'invalid_grant', error_description: 'Bad Request'

So, guys, how do you do the correct request?

[fp.mm...@gmail.com]

I'm trying to make my first API call and get an error:

AuthorizationError.USER_PERMISSION_DENIED

My configuration is:

1. Developer token - My production token which is pending approval now

2. Client customer ID - The ID of Test AdWords acc which contains a test campaign (Not Test Mcc acc)
3. Client ID - The ID from google api console
4. Client secret - The secret from google api console
5. Refresh token - The token of production MCC account

Is this a correct configuration for using AdWords API? Why do I get this Authorization Error?