Winfried Würzer Winfried Würzer has been working with SAP software for more than 25 years, starting with R/2 up to S/4HANA. As a buyer (strategic and operational) and scheduler, he worked in the supplier industry for 12 years. He made the classic SAP career from key user to sub-project manager to user support for materials management. During this time, he also completed a part-time degree in business administration. When structural change hit his employer, he moved to SAP, where he worked for 18 years as a trainer, author and consultant for SAP MM. Many MM courses such as SCM550 (Customizing MM) were within his responsibility. Since 2020 Winfried Würzer has been working as a freelance consultant, trainer and lecturer.