CPFR (Collaborative Planning Forecasting and Replenishment) has emerged as the latest business practice aiming to ensure that there is always enough quantity to meet consumer demand, while maintaining optimum levels of stock across the supply chain. The essence of CPFR is about utilizing technology capabilities and information sharing to support trading partner interaction and collaboration in meeting consumer demand. While most CPFR applications to-date focus on the replenishment of non-regular line items at central warehouse level, other forms of collaboration broaden the scope of this implementation. The Process of Collaborative Store Ordering (PCSO) has emerged as a new form of CPFR covering the daily replenishment of the full product range at store level. The application of PCSO in the Greek grocery environment has significant business result to demonstrate.