Required. The monetary amount of the line item.
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This number must follow the regular expression -?[0-9]+(\.[0-9][0-9])?. The amount is required and cannot be empty.
You specify the currency for the entire transaction including line items by setting the currencyCode property in ApplePayPaymentRequest.
Required. A short, localized description of the line item.
A value that indicates whether the line item is final or pending.