> ## Documentation Index
> Fetch the complete documentation index at: https://docs.slm.m1amdocs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Document Change Table

| Update Release | Feature | Impacted Topics | Change |
| - | - | - | - |
| Subscribe 2021.04 | Topps Gift Card Integration | [Gift Cards](Gift_Cards) | - New topics created for new object |
| [Gift Card Redemptions](Gift_Card_Redemptions) | - New topics created for new object | | |
| Support for 3DS | [Finish a Transaction](Finish_a_Transaction) | - Topic was updated with a query parameter required for 3DS support and for carrier billing. | |
| [Extended Verification](Extended_Verification) | - New topic created for feature | | |
| [Update an Account](Update_an_Account) | - query parameter enable\_3ds added | | |
| [The Transaction Object](The_Transaction_object) | - policy: enable\_3ds added to the attributes. - Other policy attributes updated. | | |
| [The Subscription Object](The_Subscription_Object) | - policy: enable\_3ds added to the attributes. - Other policy attributes updated. - Subscription Status and subscription billing status updated as part of a general update. | | |
| [The Payment Method Object](The_Payment_Method_object) | - policy: enable\_3ds added to the attributes. - Other policy attributes updated. | | |
| [Credit Card Attributes](Credit_Card_Attributes) | - Added extended\_verification\_response parameter - Added extended\_verification parameter | | |
| External ID as key | [The Account Object](The_Account_object) | - External ID added in Example of object | |
| [Fetch an Account](Fetch_an_Account) | - Added External ID in Route Parameter values | | |
| [Create an Account](Create_an_Account) | - Added external id in request example. | | |
| General | Supported Operations topic headings updated per Object | | |
| [List (All) Subscriptions](List_all_Subscriptions) | - Changed the description of the topic. - Changed Account to be a required query parameter in the HTTP request and in the query parameters table. | | |
| - [The Transaction Object](The_Transaction_object) - [The Subscription Object](The_Subscription_Object) - [The Payment Method Object](The_Payment_Method_object) | Policy attributes updated for Subscription, Transaction and Payment Method objects. | | |
| [Pause a Subscription](Pause_a_subscription) | Added clarification that relevant for credit card and external billing Methods. | | |
| [Grant Entitlement](Grant_Entitlement) | Corrected the call to show that the account ID is needed. | | |
| [Fetch Account Family](Fetch_Account_Family) | Added the Route URL that lists the supported parameters. | | |
| Subscribe 2021.05 | Metadata Name-value pair enhancement | [Metadata](Metadata) | Updated Value limit to 1024 characters and added description. |
| General | Link corrections | - [Subscribe REST API Overview](Overview) - [Subscriptions](Subscriptions) - [Accounts](Accounts) - [Campaigns](Campaigns) - [Products](Products) - [Payment Methods](Payment_Methods) - [Billing Plans](Billing_Plans) - [Chargebacks](Chargebacks) - [Invoices](Invoices) | Updated links to additional resources. |
| Update Attributes | [The Campaign Object](The_Campaign_Object) | Updated Campaign object with missing attributes | |
| [Campaign Codes](Campaign_Codes) | Added object and relevant calls. | | |
| [Flat Discount](Flat_Discount) | Added resource and attributes | | |
| Coupons Resource | Removed from guide as object was merged into campaign object | | |
| [Subscription Item](Subscription_Item) | Added the campaign\_code and campaign\_id attributes in the topic. | | |
| Subscribe 2021.06 | General | [Pause a Subscription](Pause_a_subscription) | Removed bullet point that relevant only for credit card and external billing payment methods. |
| Incremental Coupon Code Generation On Demand | [Generate Incremental Coupon Codes](Generate_Incremental_Coupon_Codes) | Added call and required attributes | |
| GZIP Compression | [Making Requests](Making_Requests) | Added header changes required. | |
| General | Added missing call | [Add Campaign Code to a Subscription](Add_campaign_code_to_a_subscription) | Added the call and the required attributes |
| Updated query parameters | [List Entitlements](List_Entitlements) | Query parameters for the call were updated. | |
| Added missing call | [Create an Entitlement](Create_a_Entitlement) | Added missing call | |
| Added missing endpoint | [Payments](Payments) | Added object, supported operations and calls. | |
| | [The Subscription Object](The_Subscription_Object) | Improved `most_recent_billing` and `most_recent_refunds` attribute descriptions. | |
| Subscribe 2021.09 | REST Versioning | Added support for two separate versions 20190501(V1) and 20210401 (V2) | Tailored content for V1 20190501 default version |
| Bug fix | [The Transaction Object](The_Transaction_object) | Changed `Policy:campaign code` attribute type to a link to campaign codes. | |
| Bug fix | [The Campaign Object](The_Campaign_Object) | Changed `campaign_type` attribute to `type`. | |
| General | | [Metadata](Metadata) | Moved topic from Overview to **Resources** chapter. |
| Document gap | [Modify a Subscription](Modify_a_subscription_Update) | Added description for the `new_billing_date` query parameter | |
| Document Gap | [Reverse a Payment](Reverse_a_Payment) | Added a response and updated the payment status. | |
| Document Gap | [Update a Cancel Reason](Update_a_Cancel_Reason) | Added topic explaining this call. | |
| Document Gap | [Event Summaries](Events_Summary) | Added topics regarding this object and its relevant calls. | |
| Bug fix | [Fetch Future Transactions](Fetch_Future_Transactions) | Added quantity query parameter and an example of a call. | |
| Document Gap | [List all Billing Plans](List_all_Billing_Plans) | Added query parameters relevant for the call. | |
| Subscribe 2021.10 | Tax Enhancement | [Tax Item](Tax_Item) | Added external\_tax\_identifier attribute. |
| Tax Enhancement | [Address](Addresses) | Added tax\_area\_identifier attribute. | |
| Tax Enhancement | [The Invoice Object](The_Invoice_object) | Added sales\_tax\_address attribute. | |
| Document Gap | [The Charge Object](Charges) | Description of the object improved to explain that these are pending charges for future invoices. | |
| General | Bug fix | [Create a Refund](Create_a_refund) | Added note that an amount is required for a refund or the full transaction amount is refunded. |
| Subscribe 2022.01 | Added New Refunds Endpoint | [The Refunds chapter](Refunds) | Added **refunds** endpoint for all Refund calls. Additionally, updated the calls to show both the existing transactions endpoint refund and the new refunds endpoint.**Update a refund** call has been removed as it is not supported. |
| Bug fix | [MAP Attributes](MAP_Attributes) | Corrected the **account** data type to string on MAP Attributes. | |
| Subscribe 2022.02 | Updated tax disposition for refunds | [The Refund Object](The_Refund_object) | Added tax input for the `refund_distribution_strategy` field. |
| Subscribe 2022.03 | Bug fix | [Pause a Subscription](Pause_a_subscription) | Corrected default value for effective\_date parameter. |
| Updated attributes | [Transaction Status](Transaction_Status) | Added missing payment method **External Billing** in payment\_method\_type attribute.Added auth\_code\_description attribute. | |
| Subscribe 2022.05 | Bug fix | [The Subscription Object](The_Subscription_Object) | Removed Pending resume status from Subscription Object |
| Venmo Support | - [Venmo Attributes](venmoAttributes_r) - [Transaction Status Venmo](transactionStatusVenmo_r) - [The Payment Method Object](The_Payment_Method_object) | Added Venmo support including: - Venmo payment method attributes and purchase flow - Venmo Transaction status log - Updated the Payment Method object with Venmo details and external\_token. | |
| Bug fix | [Fetch A Specific Child Account](Fetch_A_Child_Account_r) | Added missing call allowing to fetch a specific Child Account based on the IDs of the Parent Account and the Child Account. | |
| Subscribe 2022.06 | Improvement | [Update an Existing Rate Plan](Update_an_existing_Rate_Plan) | Added a query Parameter that allows forcing an update of an existing rate plan with associated un-billed events. |
| Subscribe 2022.09 | Bug fix | [Products](Products) | Updated the descriptions of the status and end\_of\_life Attributes. |
| Improvement | [Campaigns](Campaigns) | Added the total\_code\_marked\_used Attribute to the Campaign object. | |
| Subscribe 2022.10 | New Endpoint | [Reason Codes](reasonCodes_r) | Added the Reason Codes endpoint. |
| Subscribe 2022.11 | Improvement | [Transactions](Transactions) | Added the payment\_provider\_response Attribute to the Transactions object. |
| Improvement | [Subscriptions](Subscriptions) | Added the status query parameter to the List All Subscriptions endpoint. | |
| Bug Fix | [Rate Plans](Rate_Plans) | Corrected the HTTP Request sections in the following endpoints:- Create a New Rate Plan - Fetch a Specific Rate Plan - Update an Existing Rate Plan - List All Rate Plans | |
| [Chargebacks](Chargebacks) | Corrected the HTTP Request section in the Update a Chargeback endpoint. | | |
| [Subscriptions](Subscriptions) | Corrected the HTTP Request sections in the following endpoints:- Fetch All Currency Credit Amount Changes - Fetch Currency Credit Amount Change - Fetch Token Credit Amount Change | | |
| Subscribe 2023.01 | New Attribute | [Credit Cards](Credit_Cards) | Added the type Attribute to the Credit Card Attribute |
| New Attribute | [The Payment Method Object](The_Payment_Method_object) | Added the linked\_subscription Attribute to the Payment Method object. | |
| Subscribe 2023.05 | New Query Parameter | [Activate a Specific Subscription](Activate_a_specific_Subscription) | Added the reset\_billing\_day Query Parameter to the Activate a Specific Subscription endpoint. |
| Subscribe 2023.08 | Braintree PayPal support | - [Braintree PayPal Attributes](braintreePayPalAttributes_r) - [The Payment Method Object](The_Payment_Method_object) | Added Braintree PayPal support including: - Braintree PayPal payment method attributes and purchase flow - Updated the Payment Method object with Braintree PayPal details and external\_token. |


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