Regarding the merging of different societal and political norms through the participation of representatives of these different domains, the main thematic focus of the indicator set determined participation, and thereby the resulting topical focus of the indicator sets. Topical focus and participation in turn is likely to influence the practical recognition and legitimacy of the sets. In other words, due to the normative nature of sustainability indicator sets, such sets are more likely recognized as legitimate by those actors who assume co-ownership, because they have been involved. The limits of participation of different policy domains intended or practically achieved in the development process put likely limits to recognition and use of the resulting set.