API Changelog
Additions and updates to the API. Unless explicitly stated otherwise, all changes are backward compatible and non-breaking. For a list of deprecated APIs, see API Deprecation Policy.
Note
Lists the updates from 2025. For previous changelog data, see API Changelog Archive.
New pages
Rapyd Error Codes - All error codes and messages.
Enhancements
Request Rate Limits - Updated description.
Error Messages - Updated description.
New fields or objects
Payment branch - Merchant Advice Code (MAC) response and webhook fields:
merchant_advice_codeandmerchant_advice_message. Effective in both sandbox and production.
New pages
Merchant Advice Codes - Merchant Advice Code (MAC) codes and reasons.
Enhancements
Retrieve Card Eligibility Details - Now also available for Mastercard cards.
Initiate Merchant Query -
countryrequest parameter - New note about sandbox limitations.
New fields or objects
Payment branch - Merchant Advice Code (MAC) response and webhook fields (Sandbox only):
merchant_advice_codeandmerchant_advice_message.