A lack of which of the following elements is most likely to impede the implementation...

According to the APICS Supply Chain Operations Reference Model SCOR, an ineffective sales and operations planning (S&OP) process is most likely to impede the implementation of a demand management system. S&OP is a process that aligns the demand and supply plans across the supply chain, based on the business objectives and customer expectations. S&OP helps to balance demand and supply, improve forecast accuracy, reduce inventory costs, and increase customer satisfaction. An ineffective S&OP process can result in poor demand management, which can lead to stockouts, excess inventory, lost sales, or dissatisfied customers.