# Version History

> Source: https://docs.synthesized.io/tdk/latest/user_guide/020_guides/managing_data_properties/version_history
> For the complete documentation index, see [llms.txt](https://docs.synthesized.io/llms.txt).

Review who changed a workflow’s configuration and when, and restore an earlier version.

## Overview

Every workflow keeps a history of its configuration changes. Each entry shows who made the change and when. You can restore an earlier version if a change turns out to be wrong. The history stays empty until at least one configuration change has been saved.

## Prerequisites

- A workflow with at least one saved configuration change. Until a change is saved, the History panel shows **No versions yet**.

## Steps

1. Open the workflow.
  
  ![Open the workflow.](https://docs.synthesized.io/tdk/latest/user_guide/_images/version_history/step-1.png)
2. Open the **History** panel.
3. Select a version from the list to see who changed it and when.
4. Select **Restore** on the version you want to bring back.

## Confirm success

The workflow’s configuration now matches the version you restored. The save is recorded with the time it happened, both in the version history and in the activity log.

## Next steps

See [How to Create a Workflow](https://docs.synthesized.io/tdk/latest/user_guide/010_get_started/workflow) for how a workflow’s configuration is built up in the first place.