Even with a digital record of air ticket purchases, I find it basically impossible to fill these things out to the detail that's requested. They want a record o

Even with a digital record of air ticket purchases, I find it basically impossible to fill these things out to the detail that's requested. They want a record of the exact dates you've entered and exited every country, but I've crossed uncontrolled Schengen borders probably hundreds of times, usually with just a local transit ticket, nothing that shows up in my email with a receipt like airfare would. If they counted "the Schengen zone" as de-facto a country (for visa purposes), I might have a chance of filling the application out accurately, but at least formally I'm supposed to state the exact date for every time I exited Denmark and entered Sweden, which there is no way I can do.