As far as I know and have tested, the token endoint I've set up in Oracle Cloud, accepts only the credentials in the header (Client Credentials method). If I send it in the body, I get a 401 (unauthorized) back. Our third part applications can only send token requests with the credentials in the body, hence I'm not able to get a token from Oracle Cloud. So - is it possible to set up an Oauth2 client in Oracle Cloud that accepts the credentials in the body?