PP_M2Dbeginner
MRP
Material Requirements Planning (MRP) in SAP PP calculates net requirements for materials by comparing demand (sales orders, forecasts, planned independent requirements) against supply (stock, purchase orders, production orders) and generates procurement proposals. This topic covers MRP fundamentals, master data drivers, MRP types and procedures, the planning run process, exception handling, and the shift toward MRP Live and PP/DS in S/4HANA.
Overview
Material Requirements Planning (MRP) in SAP PP calculates net requirements for materials by comparing demand (sales orders, forecasts, planned independent requirements) against supply (stock, purchase orders, production orders) and generates procurement proposals. This topic covers MRP fundamentals, master data drivers, MRP types and procedures, the planning run process, exception handling, and the shift toward MRP Live and PP/DS in S/4HANA.
Lessons in this topic
- SAP S/4HANA MRP Tutorial: Material Requirements Planning (Part 1)Understand why MRP exists and how SAP calculates shortages and creates procurement or production proposals.
- Configuring MRP Types, Procedures, and Lot Sizing for the Planning Run (Part 2)Learn how MRP type, procurement type, lot-sizing procedure, and planning run parameters are configured and how they change planning behavior and output.
- MRP Procedure Types, Lot-Sizing Procedures, and Planning Run Execution (Part 3)Understand how MRP type, lot-sizing procedure, and procurement parameters on the material master combine to drive planned order and purchase requisition creation during an MRP run.
- Architecting Enterprise MRP: MRP Live, PP/DS Coexistence, and Operational Governance (Part 4)An architect-level view of how to design MRP execution strategy at enterprise scale, deciding between classical MRP, MRP Live, and PP/DS, and governing performance, scheduling, and migration risk.
- Multi-Level BOM Explosion, Exception Messages, and Planning File Troubleshooting (Part 5)Master the mechanics of multi-level, low-level-code-driven MRP explosion, interpret exception messages correctly, and troubleshoot planning file entry issues that cause materials to be skipped or incorrectly planned.
Interview questions covered
- What are the core concepts of MRP, and how would you explain them clearly in an SAP interview?
- How would you apply MRP in a real SAP project? Walk through the design or implementation approach.
- A production issue is reported in MRP. What would you check first, and how would you troubleshoot it systematically?
- What are the most important design decisions, trade-offs, and best practices in MRP?
- Suppose you inherit an existing MRP solution. How would you review it before making a change?
- Using this SAP project situation — A global manufacturer running ECC classical MRP across 40 plants experienced planning run windows exceeding eight hours, delaying procurement release each morning — explain Architecting Enterprise MRP: MRP Live, PP/DS Coexistence, and Operational Governance. What should happen, which concepts or process steps matter, and what common mistake would you avoid?
- Using this SAP project situation — A newly implemented plant went live with MRP but planners noticed that raw material purchase requisitions were not being generated even though finished goods planned orders existed — explain Why MRP Exists: Business Purpose and Core Logic. What should happen, which concepts or process steps matter, and what common mistake would you avoid?
- A project encounters this situation while working on Configuring MRP Types, Procedures, and Lot Sizing for the Planning Run: During a rollout, a plant applied standard MRP (PD) uniformly to all materials including low-value hardware components, resulting in thousands of small daily planned orders for items that could have been managed with simple reorder point logic. Walk through how you would analyze the requirement or issue, what you would validate, and how you would test the solution before release.
- A project encounters this situation while working on MRP Procedure Types, Lot-Sizing Procedures, and Planning Run Execution: A discrete manufacturer using lot-for-lot (EX) lot sizing for a high-runner subassembly found planned orders were being created almost daily in very small quantities, overwhelming the shop floor with excessive small production orders. Walk through how you would analyze the requirement or issue, what you would validate, and how you would test the solution before release.
- You are the senior consultant/architect responsible for Multi-Level BOM Explosion, Exception Messages, and Planning File Troubleshooting. The project situation is: During a go-live cutover, several newly created finished goods materials failed to generate any planned orders despite having complete BOMs, routings, and correctly maintained MRP views. How would you assess the design, identify the highest-risk failure modes, and define the evidence required before approving it for production?
Related topics
PP_M2D
S/4HANA Manufacturing, PP/DS, IBP, Migration and Architecture
PP_M2D
Production Orders, Process Orders and Shop-Floor Execution
PP_M2D
PP Foundation and Manufacturing Master Data
PP_M2D
Demand Management, MRP, Capacity and Advanced Planning
PP_M2D
Manufacturing Costing, WIP, Variance, Integration and Support
PP_M2D
PP Master Data