Lummetry LENS+ has complex Deep Learning models capable of analyzing all time-series based buying patterns of each SKU at a store level. Once the predictions are validated with the business team, by either the backtesting method or deliver predictions for the next X days and wait for the reality to happen in order to calculate the prediction error, we then add information about initial stock level at a day level and information about the planned replenishment for each SKU for the next X days. Next, Lummetry LENS+ processes all the info and triggers preventive OOS alerts according to the lead time for each SKU.