The Card Inquiry and Card Services APIs use Mutual (Two-Way) SSL Authentication and Channel Encryption (CE), which requires the issuer to obtain a user ID and password and install a Public Key Infrastructure (PKI) certificate issued by Visa. Test credentials can be obtained online from the Project Dashboard for sandbox testing. There is a separate application process in order to obtain production credentials. For more information about how to begin the production on-boarding process, contact [email protected].