I am trying to integrate Mastercard Payment Gateway Services (MPGS) and need to make API requests using a CA certificate in Postman. However, I am encountering issues with authentication and SSL certificates.
What I Have Tried:
- Imported the CA Certificate into Postman under Settings → Certificates.
- Added the Base URL and required authentication headers (Basic Auth).
- Ensured the certificate file is in .pem format.
- Enabled SSL Certificate Verification in Postman settings.
- Attempted to make a request, but still encountering SSL errors.
Questions:
- How do I properly configure Postman to use a CA certificate for MPGS API calls?
- Does MPGS require both client certificate and CA certificate, or just one?
- Are there any additional headers or settings required for MPGS authentication?
- Is there a way to debug SSL certificate issues in Postman?
Any guidance or sample configurations would be greatly appreciated. Thank you!