# Specification Change Log source: https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/spec-change-log/index.md Occasionally the MDES Digital Enablement API specification requires an update for clarification of existing functionality and can occur at any time. No backwards breaking changes will be introduced, and the requests and responses returned from the service will not change without prior notice. | Version | Description | Release Info | |------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [1.4.4](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-4-4/index.md) | * Removed the reference to the deprecated RSA PKCS#1 v1.5 encryption scheme from the `encryptedKey` parameter description in the /tokenize, /notifyTokenUpdated, /transact, /searchTokens and /getTokens APIs. * Updated the `oaepHashingAlgorithm` parameter to be a mandatory field within the `encryptedPayload` and `tokenDetail` objects in the /tokenize, /notifyTokenUpdated, /transact, /searchTokens and /getTokens APIs. | [August 2026](https://developer.mastercard.com/mdes-digital-enablement/documentation/release-notes/pre-release-notes-august-2026/index.md) | | [1.4.3](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-4-3/index.md) | Added a new object `cardHolderConsentAndAuthenticationData` in the /tokenize API request. | [November 2025](https://developer.mastercard.com/mdes-digital-enablement/documentation/release-notes/pre-release-notes-nov-2025/index.md) | | [1.4.2](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-4-2/index.md) | Updated *iv* parameter as part of the EncryptedPayload object in the notifyTokenUpdated (request), tokenize (requests and responses), and searchTokens (request) and in the transact and getToken APIs response. | [March 2025 - Additional Updates](https://developer.mastercard.com/mdes-digital-enablement/documentation/release-notes/updates-pre-release-notes-march-2025/index.md) | | [1.4.1](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-4-1/index.md) | Added *algorithmCipherMode* , *tag* , and *aad* as part of the EncryptedPayload object in the notifyTokenUpdated (request), tokenize (requests and responses), and searchTokens (request) APIs. Added a new parameter *algorithmCipherModeToUseInEncryptedResponse* in the transact and getToken APIs response. | [March 2025](https://developer.mastercard.com/mdes-digital-enablement/documentation/release-notes/pre-release-notes-march-2025/index.md) | | [1.4.0](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-4-0/index.md) | Added *tokenNumber* as part of the tokenInfo and *eventType* and *updatedTimestamp* as part of the token object in the notifyTokenUpdate API. | [Jan 2025](https://developer.mastercard.com/mdes-digital-enablement/documentation/release-notes/pre-release-notes-jan-2025/index.md) | | [1.3.3](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-3-3/index.md) | Added the missing *redigitizationRequired* parameter in Notify Token Updated API request. | NA | | [1.3.2](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-3-2/index.md) | Added a new value for *FundingAccountData.source* - *EXISTING_TOKEN_CREDENTIAL* . Only applicable for certain cross-program enrollment use-cases of [Mastercard Checkout Solutions](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/use-cases/card-on-file/). Please refer to relevant documentation for more info. | NA | | [1.3.1](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-3-1/index.md) | Corrected the examples for *tokenUniqueReferences*. | NA | | [1.3.0](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-3-0/index.md) | Added a new parameter - *eventReasonCode* including a value - *REDIGITIZATION_COMPLETE* to indicate the completion of token redigitization to Notify Token Updated API, Added *tokenRequestorId* and *accountPanPrefix* to Notify Token Updated and Get Token API responses, Added *tokenNumber* , *expiryMonth* , *expiryYear* and *dataValidUntilTimestamp* as part of the encryptedPayload in the Tokenize API response, Added a new parameter - *supportsAuthentication* in Transact API response. | [Jan 2022](https://developer.mastercard.com/mdes-digital-enablement/documentation/release-notes/pre-release-notes-jan-2022/index.md) | | [1.2.10](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-2-10/index.md) | Updated to include successful responses and example of API and gateway errors (for each request), removed Get Digital Assets API. | NA | | [1.2.9](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-2-9/index.md) | Added *tokenUniqueReference* and *pushAccountReceipt* parameters in *fundingAccountInfo* in Tokenize API request along with *accountHolderName* in *accountHolderData* , Added *accountHolderData* and *cardAccountData* in Tokenize and Get Token API responses. | NA | | [1.2.8](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/api-reference-1-2-8/index.md) | Added *fundingAccountInfo* object - *fundingAccountInfo.encryptedPayload* (*encryptedPayload* wrapped in *fundingAccountInfo*), Get Digital Assets API. | NA |