Zip1 specifies the primary origin or destination zip code, while Zip2 is an array allowing multiple zip codes for either origins or destinations.ZipArrayisOrigin is a boolean indicating whether the Zip2 list represents origins (true) or destinations (false).Items array details each shipment item, including ItemClass (freight classification), Weight, Length, Width, Height, and the number of pieces (Pieces).Accessorials array using ServiceCode.Username, ClientCode, and AuthenticationID authenticate the user.PricingCode, PalletCount, Direction, and ShipmentDate provide shipment specifics and account settings.