In Systems, Applications, and Products (SAP), procurement or purchasing is one of the two main functions available in SAP materials management along with inventory management. This chapter explores the hierarchy of the menu structure and its functionalities that are grouped in the customization part of SAP system. Purchasing value keys include delivery date deadline monitoring, goods receipt/invoice receipt control, and vendor evaluation. Contract is a form of purchasing that allows a customer to enter into a long-term purchasing contract with the vendor. Schema groups function as the linking method for calculation schemas to vendors or purchasing organization. There are separate schema groups for vendors and purchasing organization. Account assignment categories are very important because the buyers use the account assignment categories during purchasing transactions. Purchasing organization text includes heading, footer, sender, and close types.