Errors can occur when you add, activate, drop, or merge versions. Some errors may be caused by actions within the Manage Versions dialog box, while others may be the result of activity within the data store itself.
The affected item in the dialog box displays an error indicator. To see the cause of the error, hold your cursor over this indicator. If you create a version and the operation fails, you will see a new version with an error indicator. The version has not really been created. It is a placeholder to display the error.