Important: This definition goes against finance branch terminology. In the SAP world etc., the "header" is the top of the invoice that contains identifying information. So don't use this popup more than necessary! But a team discussed it 3/2012 and decided it was not possible to change existing INVOICES terminology. /EP
A defining feature or unique reference point that is used by a line item template. The header shows where a list of line items begins. It must be a fixed distance from the first line item in the list, and it consists of unique lines or text on the invoice image.