What Is History?
In the Change History field, you can check the change history of the record. You can also restore the record data to the previous version.
History is displayed by selecting the tab in the Comments field.
In History, the changes that were made to the record are displayed for each version.
Click "Show Update Details" to show the changes that were made in the concerned version on the "Records" screen.
Click "Restore Previous Version" to restore the record data to the previous version.