“…The challenge here is that an enormous increase in product variance has a serious impact on the value creation processes throughout the supply chain and cause the company an enormous effort in terms of costs (Krumm and Schopf, 2014). In order to meet this challenge is an agile supply chain strategy necessary which is defined through flexibility by adapting quickly, effectively to rapidly changing customer needs (Krieg, 2004) and a cost optimisation approach across the procurement chain (Huang et al, 2002;Christopher and Towill, 2000;Droege, 1999). One important approach of cost optimisation across the procurement chain is the elimination of waste in form of reduction of unnecessary product variants (Douglas et al, 2015;Christopher, 2005;Droege, 1999;Liker, 2004, Wang et al, 2011.…”