# Release History
source: https://developer.mastercard.com/pay-with-rewards/documentation/release-history/index.md

This section contains a history of what has been implemented in the Pay with Rewards API.

Following are the list of changes (in reverse chronological order).

| Release Dates  | Release Version |                                                                                                                                                                                                    Description                                                                                                                                                                                                     |
|----------------|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| January 2025   | v7.0            | **Adding Card Acceptor Terminal Id (DE 41)** CLS Auth Transaction Filtering has been updated to include the Card Acceptor Terminal Id in the Auth transaction response payload.                                                                                                                                                                                                                                    |
| January 2025   | v6.0            | **Adding Tokenized PANs** The POST /authorization API needs enhancement to enable support for Tokenized PANs in MRS system.                                                                                                                                                                                                                                                                                        |
| September 2023 | v5.0            | **Removed UAM endpoints from PWR API documentation** UAM API has a standalone service landing page under Loyalty Management. Removed references to UAM service from the PWR bundle and replaced with mock API calls to streamline documentation updates required when UAM API is updated.                                                                                                                          |
| October 2022   | v4.0            | **PWR Integration with Session M** A new data element (queueTransaction) was added to identify in the request whether the authorization is to be queued or immediately posted. [Click here](https://developer.mastercard.com/user-account-management-service/documentation/api-reference) for details.                                                                                                             |
| July 2020      | v3.0            | **Integrate enrollment endpoints with Rewards Crypto** The Enrollment API for REST is the first step to allow for our present MRS SOAP capability for user management to be carried over to REST. This enables us to publish the changes to the Mastercard Developers API, where external parties may be allowed to search, add, and update customers (or "users") and accounts in Mastercard Reward System (MRS). |
| June 2020      | v2.0            | **New REST Enrollment API supporting MRS (Set)** To strengthen PCI compliance, it has been required that the payload for the enrollment of customers (that is, users) and accounts that include PCI (and later PII) be encrypted. The enrollment payload of customers and accounts will now be encrypted with the crypto service, and then the Base64-encoded cipher is sent with the enrollment payload.          |
| December 2019  | v1.0            | **Rapid Completion of PWR RESTful Queue Auth API** Expanded Pay with Rewards (PWR) product to enable all current and future clients of SessionM by integrating with SessionM point bank APIs. [Click here](https://developer.mastercard.com/pay-with-rewards/documentation/api-reference) for details.                                                                                                             |

Refer to the [Use Cases](https://developer.mastercard.com/pay-with-rewards/documentation/use-cases/index.md) section for functionality overview and the [API Reference](https://developer.mastercard.com/pay-with-rewards/documentation/api-reference/index.md) section for technical details.