The shelf service rate indicator assesses the availability of products listed on supermarket shelves. It is calculated by subtracting the total number of partial and complete stockouts from 100. In France, for the predominantly food-focused supermarket sector, this rate is around 90%. This means that, on average, one in ten products experiences a partial or complete stockout each day. For insights into the sales and marketing costs associated with the service rate, see [link to relevant resource]. At the brand level, the shelf service rate can be analyzed for all of its listed products, by retailer. In the event of unexplained anomalies in product service rates, the brand can collaborate with the retailer in question. Shelf service rates are evaluated by ECR (Economic Cost Ratio).