In January 2024 we updated the idempotency page, added info about reactivating cards, added new events to support installment loans and updated some event fields, updated the lost/stolen guide, added new status codes for the Loan API, clarified card activation, reorganized the RDFs, fixed information about Mastercard merchant credits, and added support for Mastercard Smart Data. Click January 2024 to see the details.

As the end of the year approaches, we want to celebrate in the nerdiest way possible and take a look back at our API documentation progress in 2023. Click 2023 Year in Review to see the details.

In December 2023 we added information about Same Day fees, removed a deprecated status code, documented a new optional field, updated an example response, fixed a character limit, removed an erroneous character, and added more advanced Auth API fields. Click December 2023 to see the details.

In November 2023 we clarified settlement behavior, introduced a new lost/stolen endpoint, updated lost/stolen card behavior, updated check cancellation, added a new guide about fees and new card transaction scenarios. Click November 2023 to see the details.

In October 2023 we converted the ACH Early Access guide from a PDF into a public guide, added ANI support, automated secured credit limits, added an RDF and international character support, added more advanced Auth API fields, added a transaction ID guide, clarified merchant credits, added fields to an RDF, added Event API information, updated the Payment Risk Platform (PRP) guide, updated the Payment Screening for Tax Refunds guide, added fields to SETL, updated a couple of scenarios, updated transaction codes and a response code, and added advanced Auth API fields. Click October 2023 to see the details.

In September 2023 we added a new reference page, adjusted the card-load scenarios, corrected STAR dispute otypes and Expire Hold status codes, clarified Get Access Token, corrected parameter descriptions, clarified an RDF field and AAPM, added new auth event fields, changed a table header for events and added a new status code for the Reissue Card endpoint. Click September 2023 to see the details.

In August 2023 we added a feature type to ACFC, added new billpay response fields, corrected some RDF fields, added a new guide for the Card Info section of the CST, added an AVS codes page, added support for a new use case for Galileo Buy Now, Pay Later, added a new report for installment loans, added two new status codes to Create ACH Transaction, added new fields to the Get Auth Control response, enabled Visa advanced fields, added a new endpoint, added pagination, and clarified the description of an account feature type. Click August 2023 to see the details.

In July 2023 we updated product-switching instructions, clarified internal transfer conditions, updated some status codes, added some event fields, fixed some trans codes, added information about SEC codes, added pagination to an endpoint, updated event field formats, introduced API-first transaction histories, added a new guide, released a new RDF, clarified a few parameter properties, clarified an endpoint description, updated a font list, updated status code descriptions and corrected some field names. Click July 2023 to see the details.

In June 2023 we corrected a field, added two new guides, an erroneous value, added a new input parameter, removed bad default values, updated an RDF reference, created an international guide, and updated select fields in the reports for installment loans. Click June 2023 to see the details.

In May 2023 we added a new CST guide: Payment Posts & Returns, refund-check timing, supported RTF product-switching, updated an event name, changed some authorization response codes, added a lost/stolen tip, added SETL fields, updated freeze events, added a new event, specified TLS version, clarified AAAU, added a DSPC field, removed non-functional types, added a response field, added some trans codes, clarified roundup enablement, clarified a federal benefit endpoint, added a field to FACH, updated billpay events, added some endpoints, added a new event, published a new guide, added a new ACH return code, added new deposit category codes, improved the Modify Pending Deposit Status Return Codes enumeration, removed erroneous input params, changed a nullify property, fixed billpay endpoints, added address character support and finalized the Get Balance response field definitions. Click May 2023 to see the details.