I am trying to get access token in postman with OATUH2.0 with grant type client credentials, but it fails. I have given correct client id and password.
Invalid Token URL: Double-check that the token URL you’re using is correct. It should be provided by the API you are trying to access.
Incorrect Client ID or Secret: Ensure that both the Client ID and Client Secret are correct. Even small typos can cause authentication failure.
Scope Missing: Some APIs might require a scope, so if it's required, ensure you have added it correctly.
Authorization Server Configuration: Sometimes, the issue may lie with the authorization server itself. Ensure the OAuth 2.0 server is correctly configured to support client credentials.
Response Body/Error Message: Look at the response body for any error messages. For example, the response might contain:
invalid_client (if client ID or secret is wrong),
invalid_grant (if the grant type or credentials are incorrect),
invalid_scope (if a required scope is missing).
Content-Type Header: In some cases, you may need to manually set the Content-Type header in the Headers tab to application/x-www-form-urlencoded.
