1) Restore the List of Location as well as its content. The backup template was from another web application in the same farm. 2) Restore the List of employee which has one lookup column of List of Location's Name. That column is called location. 3) No item can be displayed in the List of employee, and there was a warning message to remove the lookup column 4) After removed the location column, the items can be displayed in in the List of employee. Thanks.