Dear sharkkae ,
What's the error you got?
The OTK authenticate against gateway Internal Identity Provider, ensure you have correct credential.
How do you build the post request for token endpoint?
the content-type should be: application/x-www-form-urlencoded
the body should have following parameters:
grant_type=password&username=${login}&scope=${scope}&password=${password}
The parameter values should be url encoded.
If you installed the oauth test clients, you can test the password grant-type on https://<your gateway>:8443/oauth/v2/client/ropc
You may refer to the product document for more details of the paramters,
OAuth Server API Endpoints - CA API Management OAuth Toolkit - 4.2 - CA Technologies Documentation
Regards,
Mark