The collection of processes associated with ordering non-standard materials (raw materials, semi-finished products, finished products) and/or services based on specifications defined by or derived from customer order information. This may include supplier identification, qualification and selection, contract negotiation and new supplier onboarding. The intention ofSource-to-Engineering-Orderis to order materials specified by explicit downstream demand (Customer Orders). These materials generally have not been qualified for the application specified or derived from the customer order. Engineering data may be exchanged with the supplying party, new material numbers may need to be created, and a specific reference or customer order detail is exchanged with the supplying party, attached to or marked on the product, recorded in the warehousing or ERP system in order to track individual deliveries. Source-to-Engineering-Orderis anETOprocess.