бути дійсним, діяти, мати валідність, цінуватись, вважатися, важливо, вважати, вважати дійсним @Em1 I removed the comma (it was a cut+paste from question). In another comment you wrote One day you maybe will learn the grammar rein school but I guess most German natives do not remember anything of all that https://europa86419.tkzblog.com/32867607/vereinsrecht-can-be-spaß-für-jedermann