This section describes how Special Order fulfillment and replenishment is supported in the Stream System. Special Order fulfillment is used when the Sales Order Line being processed is entered with a Y in the Special Flag. Special Order fulfillment may only be used when the item being processed is a stocking item. Nonstock items may not be processed using the Special Order fulfillment method.
More:
Special Orders - Sales Order Entry
Special Orders - Requisition Creation