id represents the unique invoice number; type represents the transaction type (e.g., "810"). For programmatic management of language, use language codes specified by ISO 639-1988. Specifies that the transaction is either new, a change to, or cancellation of a previous invoice. Identifies the currency of this invoice. For programmatic management of currencies, use codes specified by ISO 4217-1995. The date the merchandise being invoiced was or is expected to be shipped. The date of the last change to this invoice. Any of a number of references revelent to this invoice, such as the buyer's PO number, PO acknowledgement number, etc. An optional associated document date is also accommodated. Note: the invoice number and date are stored in the "document" element. The buyer of the goods being invoiced. Party being billed for items invoiced. Identifies the party to whom payment is to be remitted. The seller of the goods being invoiced. Identifies the carrier of the goods being invoiced. Identifies all ship-to parties. Mark-For parties are parties, generally entities within the buying organization, to whom goods are routed after physical receipt of goods by the ship-to party. Free-form notes. Allowances are distinct from discounts, which are defined under invoiceTerms. Unlimited additional charges of any type. A system reference facilitates automated processing of the document by including data elements that are not necessarily part of a standard transaction but are required or desired by the computer systems of the trading partners. Effective use of system references requires pre-arrangement between trading partners. NOTE: this structure should not be used for data that is otherwise accommodated within a transaction schema. All amounts are in the currency identified by the currencyIdentifier element. Item identification information. The quantity invoiced on this invoice line. The sum of all quantities specified here should equal the "value" attribute on element invoicedQuantity. The shipToID refers to an entry in the shipTo element on the header. The date attributes will normally not be used on an invoice; they are used on an Order Acknowledgement to allow acknowledgement of multiple shipments on a single acknowledgement. The sum of all quantities specified here should equal the "quantity" attribute of the immediately enclosing shipToLocation element. The markForID refers to an entry in the markFor element on the header. A piece identification number uniquely identifes a single piece in a transaction. When used, there is normally one piece ID number for each and every piece in the transaction. They may be buyer assigned or seller assigned. These numbers are NOT associated with a particular destination location. Unit price, exclusive of allowances and additional charges. Any of a number of references revelent to this invoice line, such as the buyer's PO line number, buyer's sales order (for special orders), PO acknowledgement number, etc. An optional associated document date is also accommodated. A system reference facilitates automated processing of the document by including data elements that are not necessarily part of a standard transaction but are required or desired by the computer systems of the trading partners. Effective use of system references requires pre-arrangement between trading partners. NOTE: this structure should not be used for data that is otherwise accommodated within a transaction schema. Line item totals plus additional charges (header and line) plus prepaid freight plus tax. Does not include allowances, discounts, or deposits. Total gross invoiced amount less allowances (header and line), less discount(s), less deposit received. The sum of the invoicedAmount element from all line items. The sum of all additional charges (header and line level). Freight charges paid in advance by the seller and charged through to the buyer on the invoice. Total of taxes due. The sum of all allowances (header and line level). Sum of all discounts that apply to this invoice. If multiple mutually exclusive discount schedules exist, this reflects one schedule of the seller's choice. Aggregate volume for all units invoiced. Aggregate gross weight for all units invoiced. Having two occurrences accommodates both English and Metric weight simultaneously. The amount to which the tax percentage is applied to derive the tax amount.