Request approval - what is involved?

I tried to list a cd today which I have sold several times before and it is now a ‘request approval’ to sell item, as quite a few books and the odd cd have been over the last few months - If I click on ‘request approval’, what is involved - is it invoices and hoop jumping like the situation a few years ago when many cd sellers on Amazon were fearing no longer being able to sell, or something straightforward with no fear of putting my seller account at risk
Thanks to anyone who can help