A Key Performance Indicator (KPI) is a measurable value or metric used by an organisation to evaluate the performance and effectiveness of a particular activity, department, employee, product, or business process. KPIs help management compare actual performance with planned objectives and identify areas that require improvement. In buying and merchandising, KPIs are especially important because buyers and merchandisers have to balance customer demand, product availability, sales, profitability, inventory, and supplier performance. For example, sales turnover is a KPI that measures the value of goods sold during a particular period. Gross margin measures the difference between sales revenue and the cost of goods sold, expressed as a percentage of sales. Stock turnover indicates how frequently inventory is sold and replaced during a period. Another example is sell-through percentage, which measures the proportion of merchandise sold compared with the quantity initially available. These indicators provide a clear basis for assessing business performance. In buying and merchandising, sales performance is one of the most important KPIs. Sales value indicates the total revenue generated by a