The refund transaction details.
amountobject<amount>OptionaltotalstringRequiredsubtotalstringOptionalNote: For an order authorization or capture, you cannot include the subtotal parameter.handling_feestringOptionalNote: For an order authorization or capture, you cannot include the handling_fee parameter.shipping_discountstringOptionalNote: For an order authorization or capture, you cannot include the shipping_discount parameter.insurancestringOptionalNote: For an order authorization or capture, you cannot include the insurance parameter.linksobject<link_description>[]OptionalhrefstringRequiredrefund_from_transaction_feeobject<currency>Optionalrefund_from_received_amountobject<currency>Optionaltotal_refunded_amountobject<currency>Optional