The errors that the Court finds matter because they represent cases where EU funds were not used in accordance with the relevant legislation and thus not in accordance with the wishes of Parliament and the Council, as legislator and budget authority.
Kontrollikoja leitavad vead on olulised, kuna nad esindavad juhtumeid, kus ELi rahalisi vahendeid ei kasutatud vastavalt õigusaktidele ning seega vastupidiselt sellele, mida olid sätestanud parlament (ehk seadusandja) ja nõukogu (ehk eelarvevahendite käsutaja).