Visa requires Two-Way SSL (Mutual Authentication) for Visa Alias Directory Service APIs.
Refer to the Two-Way SSL tutorial to quickly learn about how to get credentials to start building with Two-Way SSL.
Visa requires Message Level Encryption (MLE) for Visa Alias Directory Service APIs.
Please refer to the Message Level Encryption guide for more details.
Please refer to this tutorial and Postman collection to quickly enable Message Level Encryption for our APIs.