Hi @arrtee,
okay that looks fine to me…
However I also did not manage to get it to work with the Post Node either 
Not sure how the correct format for the constant body should be…or if it is just not possible to add form data there
Simple Java Code with java snippet nodes works e.g.:
HttpPost post = new HttpPost(url);
post.setHeader("Content-Type", "application/x-www-form-urlencoded");
/* Adding URL Parameters */
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("grant_type", "client_credentials"));
urlParameters.add(new BasicNameValuePair("client_id", clientId));
urlParameters.add(new BasicNameValuePair("client_secret", m_clientSecret.getPassword()));
urlParameters.add(new BasicNameValuePair("resource", resource));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
String json_string = EntityUtils.toString(response.getEntity());
String accessToken = null;
if (response.getStatusLine().getStatusCode()==200)
{
JSONObject temp1 = new JSONObject(json_string);
accessToken = temp1.get("access_token").toString();
}
As well as with the Palladian Web Nodes:
As well I added a new node to return the Token as a String ( Get Rest Access Token As String Node).
It does the same as the another node and outputs additionally a string variable for the token.
The Update should be availible in a few minutes.
Regarding the “Microsoft.IdentityModel.Tokens.AudienceUriValidationFailedException” could you check what part of the sharepoint URL you are using for the parameters:
So if your List is on the first lvl in the BFM_Test sharepoint for the group.sharepoint.com site:
Url in Browser something like: https://group.sharepoint.com/sites/BFM_Test/Lists/Test/AllItems.aspx
Then your configuration of the GETSPListItems node should look like this:
