Data audit is used to log and report on changes to transaction data in the model.
Enable Data Audit in a Model
Data audit is a low-overhead way to track who changed what transaction data and when. There's no impact on performance when this feature is enabled.
Data audit logs changes to public data starting from the point of activation. Any changes made before enabling the Data Audit setting aren't logged.

Data Changes Log
The data changes log is accessed by going to the side navigation and selecting Security→Data Changes.
In the log, you can:
- Select or change the model.
- Refresh the list.
- Change columns as needed.
- Filter.
You can filter the audit report by: Audit Time, Audit User, Audit Action, and other model dimensions.
- Download to Microsoft Excel.
- Delete data.
Records can be manually deleted from the data audit table. There's no option to delete data automatically based on the age of the record.

Audit Data Changes
Imported data appears in the Signed Data Old column. When you update a value, it appears in the Signed Data New column and the difference appears in the Signed Data Delta column. In the Audit Action column, the change is shown as a Modify audit action.
Any data in a public version that is copied using version management appears as a New audit action.
