
1) Business document
Found on
https://www.crosswordclues.com/clue/sales-order

The Sales Order, sometimes abbreviated as SO, is an order issued by a business to a customer. A sales order may be for products and/or services. Given the wide variety of businesses, this means that the orders can be fulfilled in several ways. Broadly, the fulfillment modes, based on the relationship between the order receipt and production, are a...
Found on
http://en.wikipedia.org/wiki/Sales_order
No exact match found.