The data has been generated using warehouse parameters from "Roodbergen, K.J. and de Koster, R.B.M. (2001). Routing methods for warehouses with multiple cross aisles. International Journal of Production Research, 39(9): 1865-1883." and using the inventory routing parameters from "Solyali, O. and Sural, H. (2011). A Branch-and-Cut Algorithm Using a Strong Formulation and an A Priori Tour-Based Heuristic for an Inventory-Routing Problem. Transportation Science, 45(3): 335-345." Each instance setting consists of 10 instances, randomly generating the picking demand, maximum inventory levels and initial inventories.