This choreographies document describes ordering between Buyer and Seller where the Buyer wants to reach an agreement with the Seller about an order. It describes a series of activities that govern communication between the parties and refers to the specifications where information and rules that apply are described. The various possible behaviours of the Seller and Buyer subsequent to the first order communication are conveyed by variants of this choreography that are described in 5.2. Previous activities (e.g. cataloguing) and subsequent activities (e.g. invoicing) are outside the scope of this document. If performed electronically, their implementation is covered by other choreographies. The identifier of this choreographies document is EN 17016-1:2022. How to claim conformance to this choreography is described in 5.2.3.