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Nowadays, one of the key challenges is to design and maintain sustainable systems. This challenge is even more difficult for system of systems or complex systems. A possible contribution is to provide approaches that allow to take into account requirements in the earlier phases of the projects and the interests and benefits of stakeholders. These requirements should take into consideration the notion of “safe and just space” that define planetary boundaries and social foundations. The approach proposed in this paper is based upon Value Analysis methodology and more specifically Stakeholder Value Networks (SVN) that are represented through a SysML profile which defines an extension of the SysML standard. This extension is an added value for the early requirements phases of system engineering.
