The INVHEADER table describes how DTD data elements in Invoice Header map to open interface tables. The invoice header element (%AMOUNT.DOCUMENT.T;) contains the elements VALUE, NUMOFDEC, SIGN, and DRCR that map to AP_INVOICES_INTERFACE.INVOICE_AMOUNT and also contains the element CURRENCY that maps to AP_INVOICES_INTERFACE.INVOICE_CURRENCY_CODE. The invoice header element (%DATETIME.DOCUMENT) contains the elements YEAR, MONTH, DAY, HOUR, MINUTE, SECOND, SUBSECOND, and TIMEZONE that map to AP_INVOICES_INTERFACE.INVOICE_DATE. The invoice header element DOCUMENTID maps to AP_INVOICES_INTERFACE.INVOICE_NUM. The invoice header element DESCRIPTN maps to AP_INVOICES_INTERFACE.DESCRIPTION. The invoice header element DOCTYPE maps to AP_INVOICES_INTERFACE.INVOICE_TYPE_LOOKUP_CODE. The invoice header element PAYMETHOD maps to AP_INVOICES_INTERFACE.PAYMENT_METHOD_LOOKUP_CODE. The invoice header element PARTNER contains the element EMAIL that maps to AP_INVOICES_INTERFACE.VENDOR_EMAIL_ADDRESS. The invoice header element PYMTTERM contains the element DESCRIPTN that maps to AP_INVOICES_INTERFACE.TERM_NAME.