The Invoice is used to invoice a customer for goods/services the have been provided. Information that applies to the entire invoice document. The Header supports summary amounts for line items, charges, taxes and allowances. It also supports itemizing Header level charges, taxes and allowances for use in credit or debit invoices. In this case Line items are not needed. The summary amounts in the Header include the Line level amounts and Header level amounts. In general an Invoice Line can be aligned with Order Lines. The ItemQuantity and Price are used to compute the Total. The Total is a sum of the Total and any Charges, Taxes or Allowances. Is a SubLine of the InvoiceLine in order to provide a finer grained breakdown of the items being invoiced. The InvoiceHeader type supports summary amounts for line items, charges and allowances. A code for the invoice.Example: Special allowance for preferred customers. Indicates the number of order items for the given line.. Unit price of the item for the number of items in the unitCode specified in the PerQuantity elements. In most cases the unitCode of the PerQuantity is the same as the unitCode of the Quantity element above. Unit price of the item for the number of items in the unitCode specified in the PerQuantity elements. In most cases the unitCode of the PerQuantity is the same as the unitCode of the Quantity element above. Indicates that the line is an open item and is not to be included in the document total. The InvoiceLine type supports order line invoicing. Pricing amount for the current line.