By default, shipping methods and fees are collected by the retailer according to their store's shipping profiles - but are not transferred to the supplier.
As a supplier, if you need to collect shipping on Carro orders, there are 2 options:
1. Factor in the shipping fees when considering your revenue splits.
2. Activate Pass-Through Shipping: Suppliers receive a shipping method and shipping costs for orders generated by their retail partners (must be approved by partner).