It does not specifically mentioned what they really need from time to time. As I was student at high school then university for undergrad and then master, I did not have too much in my cv instead of my last job and my current job with duties. The just asked me to provide CV and schedule A.I got the same issue. They asked me again for everything. I had to fulfill schedule A again, and after that, they sent me an additional ADR asking me for my CV (specific positions, job duties), not only for my last 10 years, they asked for everything since I was 18 years old.