Abstract: The successful monitoring of procurement processes requires that dates in the supply chain be calculated exactly and tracked accordingly. The central calculation of dates ensures that different applications arrive at the same results, optimizing their accuracy. Monitoring the dates will allow a user to quickly gain an overview of the current procurement situation and react on time to potential delays. Dates from a purchase order are transferred to the event management system and used to calculate base dates. A schedule bar is provided in the event management system, and includes dates received or calculated by the event management system. An activity is triggered based upon the occurrence or nonoccurrence of an event by a purchaser order date or a calculated date.