This document discusses sourcing setup in Oracle Purchasing. It defines key sourcing terms like Approved Supplier List (ASL), ASL attributes, and sourcing rules. It provides steps for setting up a blanket purchase agreement and defining the ASL. This includes creating ASL entries at the item or commodity level, specifying business type, approval status, and global/local flags. Source document information like purchasing UOM and release generation method can be set in supplier-item attributes. Sourcing rules must then be assigned to items/organizations to define the supply chain network.