What is a primary cause of stock redundancy?

Stock redundancy primarily occurs due to changes to product specifications. When a company alters the specifications of a product, it can lead to a mismatch between the existing stock and the new requirements. This often results in surplus inventory that cannot be sold or requires modifications to meet the updated standards.

In contrast, strong customer demand forecasting generally helps in adjusting inventory levels appropriately, while high sales volume usually indicates a healthy turnover of stock, reducing redundancy. Excessive marketing campaigns could lead to increased sales or might drive unwanted stock if the campaigns do not create a corresponding increase in demand. Thus, the impact of changing product specifications directly explains how stock redundancy is generated.