Viewing Related Items
If there are any Related Items, you will see the icon shown here. If there is no icon, this means there are no items. If you can't see this column you can add it using Add/Remove Columns.
Note that the exclamation mark will only be visible if there is a problem loading the information.
You can also see details of a document’s related items by clicking the link icon in the Related Items column. Alternatively, go to the document properties and select the Related Items tab.