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# Material Requirements Planning With SAP S/4HANA — Reading Guide
## 【One-Line Pitch】
A practical, hands-on guide for SAP consultants and MRP controllers who need to configure, run, and evaluate material requirements planning in SAP S/4HANA—covering everything from classic MRP to MRP Live, the MRP Cockpit, and advanced planning features like DDMRP and pMRP.
## 【Book Arc】
- **Opening (~0%–9%)**: Introduces the fundamental MRP concept within SAP S/4HANA's supply chain architecture, then moves into configuration—covering MRP types, Customizing settings via Transaction OMDQ, and how to create custom MRP types by copying standard ones. Key configuration topics include reorder point logic, external requirements handling, and the new material documents indicator for forecast calculation.
- **Early (~9%–19%)**: Explains how to run MRP, including the transition from SAP APO to SAP HANA-based planning. Covers MRP Live's ability to plan PP/DS materials in a single run, the planning sequence per low-level code, and the BAdI option for adding selection criteria. Introduces the MRP Cockpit—a set of SAP Fiori applications for evaluating MRP results.
- **Early (~19%–34%)**: Dives deep into the MRP Cockpit's foundation: the shortage concept, supply and demand profiles, and how to define custom shortage definitions. Explains accessing Fiori apps via the launchpad, the Area of Responsibility (AoR) concept, and which features are unsupported in the MRP apps (e.g., total requirements, outdated subcontracting logic).
- **Middle (~34%–47%)**: Walks through the core MRP Cockpit applications in detail—Monitor Material Coverage and Manage Material Coverage—including filters, chart settings, shortage resolution, and the ability to hand over purchase requisitions. Covers the specialized Monitor/Manage Internal Requirements apps for order reservations and their filtering options.
- **Middle (~47%–53%)**: Continues with the external requirements applications (Monitor/Manage External Requirements) focused on sales order shortages, and introduces the Monitor/Manage Production or Process Orders apps. Shows how each app handles specific shortage types and provides navigation to the stock/requirements list for detailed analysis.
## 【Key Takeaways】
- **MRP types are the backbone of planning behavior** (Opening): Standard MRP types cover most business needs, but you can copy and customize them via Transaction OMDQ to create custom types—for example, controlling whether external requirements are considered in reorder point logic. This is the first configuration decision that shapes everything else.
- **SAP S/4HANA unifies classic MRP and PP/DS planning** (Early): The move to SAP HANA eliminated the need for a separate SAP APO system with LiveCache. MRP Live can now plan PP/DS materials alongside classic MRP materials in a single run, with PP/DS materials processed first per low-level code.
- **The MRP Cockpit is your operational command center** (Early): A suite of SAP Fiori apps (Monitor/Manage Material Coverage, Internal/External Requirements, Production Orders) replaces traditional transaction-based evaluation. These apps are built around the concept of "shortages"—when projected stock cannot cover requirements.
- **Shortage definitions are configurable, not fixed** (Early): You can create custom shortage definitions in Customizing by grouping supply elements (stock, execution supplies, ordered supplies, planned supplies) and demand elements (negative stock, execution demands, order demands, planned demands) to match your planning logic.
- **Area of Responsibility personalizes the planning view** (Early): Users select plant and MRP controller combinations as their AoR, which determines which materials appear in MRP apps. The My Area of Responsibility app (introduced in S/4HANA 2020) simplifies this selection.
- **Monitor Material Coverage is the entry point for daily work** (Middle): This app lists materials with shortages, showing first shortage date, shortage quantity, and a graphical stock availability chart. You can configure the horizon (days/weeks), save views, create custom tiles, and jump directly into Manage Material Coverage for detailed action.
- **Manage Material Coverage provides transaction-level detail** (Middle): Similar to Transaction MD04, it shows stock, receipts, and requirements with popup details for each MRP element. Recent releases added quick actions: create planned orders, edit production order dates/quantities, and hand over purchase requisitions.
- **Specialized apps handle specific shortage types** (Middle): Monitor/Manage Internal Requirements focuses on order reservations (production, process, maintenance, network orders), while Monitor/Manage External Requirements handles sales order shortages—each with tailored filters and actions.
## 【Reading Tips】
- **Skim Chapter 1–2 if you're experienced**: The opening MRP concept overview is useful for beginners but familiar territory for seasoned SAP consultants. Focus instead on the S/4HANA-specific changes and new tools mentioned.
- **Deep-read the configuration chapters (Chapters 3–4)**: MRP type configuration is dense but critical. Pay special attention to the reorder point settings, external requirements handling, and the material documents indicator for forecasting—these are subtle but impactful decisions.
- **Use the MRP Cockpit chapters (Chapter 6) as a reference**: The app-by-app walkthroughs are best used when you're actually working with a specific application. Note the version-specific improvements (1909 through 2022) to understand what's available in your system.
- **Watch for unsupported features in MRP apps**: If a material uses total requirements, distribution keys, incompatible forecast demand, or outdated subcontracting logic, it won't display in the MRP Cockpit apps. Use Transaction MD_MRP_FORCE_CLASSIC to identify such materials.
- **Take away the configuration-to-operation flow**: The book's real value is showing how configuration decisions (MRP types, shortage definitions, AoR) directly shape the operational experience in the Fiori apps. Read with this connection in mind.
## 【Coverage Limits】
The excerpts cover the introduction, MRP configuration, running MRP (including MRP Live), and the MRP Cockpit evaluation apps in detail. Later chapters on demand management, DDMRP, long-term planning, pMRP, and administration are listed in the highlights but not covered in the sample excerpts.
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Passage locations
Excerpt 1
ion to change the MRP type Customizing is Transaction OMDQ . When you enter this transaction, you will see a list of the existing MRP types. When you access...
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Excerpt 2
cused on the order itself) are also part of the MRP Cockpit. There are also applications to hand over purchase requisitions, display MRP issues, display MRP...
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Excerpt 3
h shows the result of the check carried out by the MRP apps. The following values can be found for a material in this column: Initial Material has not yet be...
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Excerpt 4
s). The Monitor Internal Requirements app shown in Figure 6.57 can be accessed from the SAP Fiori launchpad and shows a list of order reservations that are u...
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