Below is the definition for the IAggregateCartRequest interface used in the Pricing Totalling callback.

public interface IAggregateCartRequest : ICartBaseRequest
    {
        /// <summary>
        /// Get Cart Context
        /// </summary>
        /// <returns></returns>
        public ICartContext GetCartContext ();

        /// <summary>
        /// Request Id
        /// </summary>
        public string RequestId { get; }
    }

Below is the definition of the ICartBaseRequest interface which IAggregateCartRequest inherits.

public interface ICartBaseRequest : ICallbackBaseRequest
    {
        /// <summary>
        /// Cart Id
        /// </summary>
        public string CartId { get; }
 
        /// <summary>
        /// Cart Object
        /// </summary>
        public IProductConfigurationModel GetCart();
    }

Below are the ICartContext interface details which is used by GetCartContext() method in IAggregateCartRequest interface.

public interface ICartContext
    {
        /// <summary>
        /// Cart header model
        /// </summary>
        public IProductConfigurationModel GetCart();
 
        /// <summary>
        /// All product lines present in the cart
        /// </summary>
        public List<IProductLineItemModel> GetLineItems();
 
        /// <summary>
        /// Get Summary Groups
        /// </summary>
        List<ISummaryGroup> GetSummaryGroups();
    }

IProductConfigurationModel interface is used by GetCart() method in ICartBaseRequest interface.

Public interface IProductConfigurationModel : IBaseModel<IProductConfiguration>
    {
 
    }
 
IProductConfigurationModel  is inheriting IProductConfiguration so below is the definition of IProductConfiguration.
 
public interface IProductConfiguration : IBaseEntity
    {
        /// <summary>
        /// Sold to Account Id.
        /// </summary>
        public string AccountId { get; set; }
 
        /// <summary>
        /// Price List Id.
        /// </summary>
        public string PriceListId { get; set; }
 
        /// <summary>
        /// Cart Approval Preview Status (pending or complete)
        /// </summary>
        public string ApprovalPreviewStatus { get; set; }
 
        /// <summary>
        /// Cart Approval Status
        /// </summary>
        public string ApprovalStatus { get; set; }
 
        /// <summary>
        /// Billing Preference Id
        /// </summary>
        public string BillingPreferenceId { get; set; }
 
        /// <summary>
        /// Pricing Date for the Cart.
        /// </summary>
        public DateTime? PricingDate { get; set; }
 
        /// <summary>
        /// Start date for the Cart.
        /// </summary>
        public DateTime? ExpectedStartDate { get; set; }
 
        /// <summary>
        /// End date for the Cart.
        /// </summary>
        public DateTime? ExpectedEndDate { get; set; }
 
        /// <summary>
        /// Contract Numbers for querying Price Lists.
        /// </summary>
        public string ContractNumbers { get; set; }
 
        /// <summary>
        /// CouponCodes
        /// </summary>
        public string CouponCodes { get; set; }
 
        /// <summary>
        /// Contains the Effective Price List Id (Quote PriceList)
        /// </summary>
        public string EffectivePriceListId { get; set; }
 
        /// <summary>
        /// To identify cart business object type
        /// </summary>
        public string BusinessObjectType { get; set; }
 
        /// <summary>
        /// Cart Status
        /// </summary>
        public string Status { get; set; }
    }