The invoice amount summary of item total, discount, tax total, and shipping.
currency_codestring<currency_code>OptionalvaluestringOptionalbreakdownobject<amount_with_breakdown>Optionalitem_totalobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequireddiscountobject<aggregated_discount>Optionalinvoice_discountobject<discount>Optionalpercentstring<percentage>Optionalamountobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequireditem_discountobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequiredtax_totalobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequiredshippingobject<shipping_cost>Optionalamountobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequiredtaxobject<tax>Optionalpercentstring<percentage>Requiredamountobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequiredcustomobject<custom_amount>Optionalamountobject<money>Optionalcurrency_codestring<currency_code>RequiredvaluestringRequired