The document discusses supply chain management challenges related to promotions and how to mitigate their negative effects. It describes the bullwhip effect caused by promotions and information delays. Three ways to alleviate it are operational improvements, information sharing, and channel alignment. Improving promotion forecasting requires collaboration between manufacturers and retailers on factors like package sizes, pricing strategies, and stockpiling behavior. The CPFR framework and S.M.A.R.T.S. model aim to aggregate sales data, model customer responses, and synchronize shipments with demand to improve forecast accuracy at the SKU level during promotions.