Operations typically take over the work from sales when the customer have signed. This include handling orders, shipments and inventory. It also include such disciplines as Inventory planning and forecasting. Operation also often work with external shipping suppliers, warehouses and suppliers so having the right software with the right integration is very important.
Foreign cloud based platforms are often limited in seamless integration with Japanese 3PL partners but can often be configured to work relatively smooth nevertheless. Depending on the size or your operations we might consider custom integrations but will typically suggest some simpler manual work-arounds.