API Changelog: April-May 2025

Returns API (Effective April 10): Removed the ability to create a Payee on the fly. You must now create the Payee first and use the payeeId when initiating a Return.
Account Creation (Effective April 7): The ibanCountry field is now required for all Fiat Account and Virtual Account creation, except for GBP.
Authentication (Effective May 29): Rate limiting is now active on the {{authUrl}}/oauth/token endpoint. Please ensure you are caching your tokens appropriately. See docs.

Account Statuses (Effective May 29): A new UNBLOCKING status has been added to the Fiat Account and Virtual Account. Please ensure your application can handle this new transitional state.