# 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 |
|------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------|
| [1.4.1](https://developer.mastercard.com/mdes-digital-enablement/documentation/api-reference/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   |
| [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     |
| [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.                                                                                                                                                                                                                                                                                                                                                                                                              | Dec 2023     |
| [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.                                                                                                                                                       | July 2023    |
| [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*.                                                                                                                                                                                                                                                                                                                                                                                                                                                    | Feb 2023     |
| [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     |
| [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.                                                                                                                                                                                                                                                                                                                                                                      | June 2020    |
| [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.                                                                                                                                                                                                                                      | May 2019     |
| [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.                                                                                                                                                                                                                                                                                                                                                | January 2018 |