Today's trends such as globalization, increased customer demands, and increased sustainability challenges have caused a paradigm shift, where the importance of designing lean-and sustainable modern manufacturing systems is realized by many companies. This study proposes a process of action steps using Value Stream Mapping method integrated with sustainability life cycle analysis and sustainability compliance index to assist in designing lean-and sustainable production systems. The developed process was validated through a case study to test the adopted tools and how they can capture and improve the lean-and sustainability levels. The current sustainability and lean levels were explored first, followed by analyzing and developing the future improved state. A roadmap of about 40 actions was suggested to the case company distributed on a one year time plan. The key contribution of this study is an applicable and generic process of action steps including several adopted tools from the leanand sustainable product development fields to help manufacturing companies in creating roadmaps for more lean-and sustainable production systems.