I don't use the books feature much. I was handed a 100 page document that has each spread as a document in the book, when I go to convert to PDF it says that there are missing links in the book.
How do I find out which pages have missing links and the names of the missing links?
Set up a Preflight Profile for this (or rather, I believe the default preset already checks for missing links) and run it on your entire book using the Book Panel menu.