SharePoint Versioning

Versioning is available for list items in all default list types—including calendars, issue tracking lists, and custom lists. It is also available for all file types that can be stored in libraries, including Web Part pages.

Versioning helps us with the following:

Track history of a version - When versioning is enabled, you can see when an item or file was changed and who changed it. You can also see when properties (information about the file) were changed. For example, if someone changes the due date of a list item, that information appears in the version history. You can also see the comments people make when they check files into libraries.

Restore a previous version - If you made a mistake in a current version, if the current version is corrupt, or if you simply like a previous version better, you can replace the current version with a previous one. The “restored” version becomes the new current version.

View a previous version - You can view a previous version without overwriting your current version. If you are viewing version history within a Microsoft Office document, such as a Word or Excel file, you can compare the two versions to determine what the differences are.

To do this…	I need this permission…
View version history	Full Control, Contribute, Read
Restore a previous version	Full Control, Contribute
Delete a version	Full Control, Contribute
Unpublish a version	Full Control, Contribute
Recover deleted a deleted version (30 days)	Full control and/or Contribute