The picture is a linked picture whose external linked file has been modified in an image-editing program. However, the picture in the publication still shows the unmodified version. If this is not fixed, the publication will continue to show the unmodified version of the picture.
To find and select the item, click the error message in the Design Checker task pane, click the arrow, and then click Go to this Item.
Update Link Click this fix to update the picture and show the modified version.