Thank you for context.
Hungarian vetos blocking EU financial packages to Ukraine
Veto should be a uncriticized power of EU membership. A not particularly creative agreement EU members can make is to fund and benefit from a program budget on which just the approving members decide upon. If you wanted a $100B bill to gift stuff to Ukraine, and Hungary's share was going to be $1-$5B, then a $95B-$99B bill could be passed among other members.