Once you successfully tested your API via the Portal UI, you may want to test it programatically (e.g. using Postman).
- Check in the API Description what OAuth2 flow is available for your API in sandbox
- Download the API Open API Specification (hyperlink below the API description)
- Depending the OAuth2 flow you want to use, follow the instructions below to call your API:
- Standard flows: Client Credentials,
- PSD2 specific flows: Authorization Code (PSD2)