The pricing procedure key concepts in SAP MM refer to the fundamental principles and guidelines used in determining pricing conditions for materials management processes within the SAP environment. These concepts involve configuring condition types, access sequences, calculation schema, and condition tables to establish pricing rules and calculations for procurement and inventory management activities. Understanding the key concepts of pricing procedures in SAP MM is crucial for effectively managing costs, determining purchase prices, and ensuring accurate pricing information across various procurement transactions. By mastering these key concepts, users can streamline pricing processes, optimize procurement activities, and enhance overall supply chain management within the SAP MM module.