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

# December 2021 (21.0.7998)

> Release notes for CData Sync December 2021 (build 21.0.7998).

## Key Features

* Added support for [Clustering](../../getting-started/installation-and-configuration/clustering) multiple instances of CData Sync.
* Added a new Incremental Replication strategy for SQL Server that uses [Change Data Capture](../../connections/sources/sql-source#configure-change-data-capture-and-change-tracking).

## CData Sync Application

### Added

* Added support for running CData Sync using JDK 16.
* Added the option to copy events when [you create a job from an existing job](../../getting-started/administration/jobs-page#cloning-a-job).
* [Table Name Prefix](../../jobs/advanced-job-options) now supports slash `/` characters.
* Added support for SQL Server, MySQL, and PostgreSQL databases as AppDb.

### Changed

* Improved the **Cancel Job** operation and added support for canceling jobs running on different instances.
* Improved replication with an integer/long Incremental Check Column:
  * The **Replicate Interval Unit** option now supports rows as a value.
  * Sync finds the start value if **Replicate Start Date** is empty.
* UI notifications now pin to the top of the page. This behavior helps prevent users from missing notifications when they scroll down.
* Application logs now include JVM Args on start up.
* Sync now checks for the 2017 VC++ Redistributable during Microsoft Windows installation.
* Changed the application settings **Expired Days** label to **Retention Period (Days)**.

## Source and Destination Connectors

### Added

* Added SingleStore as a destination.
* Added support for AzureAD and AzureServicePrincipal AuthSchemes for some Microsoft sources.

### Changed

* Renamed the OracleOCI connector to Oracle.
* SAP SuccessFactor now properly shows the Incremental Check Column in **Task Settings**.

## CData Sync API

### Added

* Added a new Tasks endpoint to manipulate tasks in a job more easily. The ability to update queries/tasks from jobs has been deprecated.
* Added the Transformations endpoint for CRUD support and transformations.

### Changed

* Transformations now support the ability to add queries when the transformation is first created.
* The Sync API now generates a proper error message when the authtoken is incorrect.