Walmart Drop Ship Vendor (DSV) sellers keep products in their warehouses and list them on walmart.com. When an order is placed, the seller ships it to the buyer with a Walmart packing slip. Walmart can also request that a seller ship a particular order to a Walmart retail location when a buyer chooses the “pick up in store” option. A big difference between DSV and regular 3P marketplace sellers is that Walmart covers the cost of the UPS package for DSV, so there is no shipping expense for Drop Ship Vendors. About Leanafy’s Walmart DSV Integration Integration Functions Supported Integration Manager downloads sales orders from Walmart DSV Integration Manager delivers sales orders to the WMS/OMS system Integration Manager retrieves shipment tracking and inventory levels from the WMS/OMS system Integration Manager sends shipment tracking and inventory levels back to Walmart DSV