Dieter Schlagenhauf started his career as an : asset accountant at a subsidiary of BASF AG. After that, he worked as head of fixed assets accounting at SWF GmbH (automotive) and Wandel + Goltermann Group (electronics). In 1993, he switched to consulting and was appointed product manager for fixed assets accounting in the software industry. In this industry, he worked for about 6 years for DCW, a company founded by Dr. Claus Wellenreuther, a co-founder of SAP and the creator of SAP financial accounting. In parallel, Dieter Schlagenhauf started his own company, INVENTAR Organisationsberatung, in 1997.