There are multiple definitions - click on the translation that matches your context.
decision means:
Beschluss means:
Substantiv
partial
noun
Since the term "decision" is rather broad and can include in some cases some background or information in support of the decision, this English term should be used only if the German context indicates that Beschluss is being used more broadly (and perhaps less legally).
(EU LAW) a European Union law that is not of general application but is legally binding on the party it concerns (an individual member state, a group of people or an individual citizen)
A dairy banned by the EU from selling its curd cheese is to challenge the decision.
a judgment of a court, agency or other tribunal
A doctor fighting to have a phone mast near her house moved is facing a long wait for a decision from the Court of Appeal.