Had a French Schengen visa, single entry, 15 days max. I spent 1 day in France and 13 days in Germany.
When I exited from Germany, the officer questioned me about it and typed notes into his system. He told me I should apply through Germany next time.
Now I’m a bit worried. Does something like this actually have consequences or is it just a warning? Could this affect future Schengen visa applications?