You can use the Object Browser to view and highlight problems or potentially problematic objects one by one. You can click the or button to view the next or last object or problem, respectively. If necessary, you can also change the highlighting settings.
You may want to use the Object Browser in combination with the Enfocus Inspector to see more details about a particular problem or to correct the problem immediately.
For example, suppose you get an error saying that the resolution of three images in your PDF document is too high. You can proceed as follows: