A cart item with a type of Charge is created with the Cart Delivery Group Method after the shipping integration. A shipping integration is an integration that calculates and applies shipping costs and options to a cart or an order basedon various factors, such as product weight, dimensions, quantity, location, andcarrier service level. A shipping integration can use either an external shipping service provider or custom Apex code to perform the shipping calculation. The Cart Delivery Group Method is a method that determines how products are grouped into delivery groups based on their shipping methods and addresses. A delivery group is a logical grouping of products that are shipped together using the same shipping method and address. After performing the shipping calculation for each delivery group, the shipping integration creates a cart item with a type of Charge and a charge type of Shipping for each delivery group. These cart items represent the shipping costs and options that are applied to each delivery group. A cart item with a type of Surcharge, Shipping, orDelivery does not exist or is not related to the shipping integration. Salesforce References: [B2B Commerce Developer Guide: Shipping Integration], [B2B Commerce Developer Guide: Cart Delivery Group Method]