Invoices are predefined charges that can be paid at a later date via the Hosted Payment Pages.

Field	Type	Description
`amount`	integer	Amount of the invoice in the smallest currency unit.
`currency`	string	The ISO-4217 3-letter currency code for the invoice.
`description`	string	Description for the invoice.
`reference`	string	Your reference for this invoice.
`payable`	boolean	Indicates whether the invoice is awaiting payment.

Invoice Import Fields

Field	Type	Description
`uuid`	string	Unique identifier for this import.