Per the documentation, I've created an "installed package" in the admin panel of SFMC, which provides me a clientId and clientSecret. I'm using the Python requests library to make the call from my command line. This is just to get an accessToken, so the code is pretty straightforward:

import requests

url = 'https://auth.exacttargetapis.com/v1/requestToken'
headers = {'Content-Type': 'application/json'}
clientId = '123'
clientSecret = 'abc'

response = requests.request('POST', url,
                            auth=(clientId, clientSecret),


The verify flag is set to False for now because of unresolved issues with the Python package certifi, but this is a separate issue and shouldn't affect the request.

I don't know exactly what the issue is, but I always receive this error message:

{"message":"clientId is required","errorcode":10002,"documentation":""}

I'm supplying the clientId in the appropriate (Python) syntax, and it's such a simple request that I can't see why it's failing. Any help is much appreciated.

SFMC API documentation: https://developer.salesforce.com/docs/atlas.en-us.mc-getting-started.meta/mc-getting-started/mc-dev-setup.htm

Requests (Python HTTP library): http://docs.python-requests.org/en/master/

  • Have you tried using the clientId and clientSecret in just Postman, or some other REST tool? – Timothy Feb 22 '18 at 20:24
  • I just downloaded Postman for Windows (x64) and it worked, but only after I turned off SSL certificate verification (this is a separate issue I'm having with the 'Request' library, but I don't think it's related). In any case, I'm still not sure why making the Python request is resulting in an error. – smc5293 Feb 22 '18 at 21:07
  • I was able to duplicate this error by setting Content-Type to text instead of application/json – Cleverlemming Jun 7 '19 at 4:16

You need to send the clientId and clientSecret as the body of the POST not as an auth header like:

  "clientId": "gyjzvytv7ukqtfn3x2qdyfsn",
  "clientSecret": "************"

or a data key value pair like: data = {'clientId':'value'}

| improve this answer | |
  • I tried this but received a different error: {"documentation": "https://developer.salesforce.com/docs/atlas.en-us.mc-apis.meta/mc-apis/error-handling.htm", "errorcode": 0, "message": "Bad Request"}. I assume that this means the request validated (i.e., credentials were supplied in the correct format), but the credentials themselves were incorrect. I copied/pasted the clientId and clientSecret directly from SFMC into my script, so I'm certain that they're correct. – smc5293 Feb 23 '18 at 17:31
  • It occurred to me that, in addition to removing the auth header, I should try removing the headers header as well. This did the trick! I'm not really sure exactly why this is, but it solved the issue. Thanks for the tip @TravisNaughton. – smc5293 Feb 23 '18 at 17:34

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.