A delivery pattern defines when a delivery can occur. The delivery pattern can be used for internal and external deliveries. Delivery Patterns are not required to order and deliver parts to a production line. The material requirements that are required between two delivery times will be summed and moved to the earlier delivery time. 

Example: Supplier A only delivers parts on Friday at 8 am. A delivery pattern would be created to reflect the 8 am Friday delivery. All order requirements prior to the delivery would be aggregated and assigned to the previous Friday 8 am delivery. Ten xyz parts are required on Friday at 7:30 am on Jan 23rd. These parts would need to be delivered using the 8 am delivery on Friday Jan 16th to be available.