In the commercial and marketing world, the concept of markdown has various meanings. The most widespread understanding is associated with its use during sales periods. In distribution management, markdown refers to the difference observed during inventory between the actual stock and the theoretical stock calculated from recorded sales. Markdown occurs when the actual stock measured during inventory is less than the theoretically expected stock. This phenomenon is divided into unknown and known markdown, the latter generally being the most prevalent. In the case of excess stock, it is referred to as overstocking. Furthermore, markdown can also refer to the practice of removing the price tag from merchandise before selling it at a reduced price through an alternative distribution channel. The objective is then to preserve the brand image, which is incompatible with a traditional clearance sale. However, this practice is becoming less common with the emergence of new market trends.