With us migrating our User Manual into our new and improved Success Site which brings together the Community, Knowledge base and User Manual, you are going to see a lot of changes.
Please check the new location and verify which link does not work.
Note: We are aware of some links within the User Manual sections that are dead or are redirecting to an Opps page. We are in the process of locating and fixing them. If you come across them, please let us know.