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An invoiceA document that provides a detailed description of a purchase, including products purchased, quantity, price, shipping cost, sales tax, and total. is a record of the record of payment for an order. Multiple invoices can be created for a single order, and each can include as many or as few of the purchased products that you specify. You can upload a high-resolution logo for a print-ready PDF invoice, and include the Order ID in the header. To customize the invoice template with your logo, see: Preparing Your Invoice Logo.