TutorialKart.comSAP SCM Tutorial
SAP SCM stands for SAP Supply Chain Management. It supports the planning and coordination of demand, procurement, production, inventory, transportation, and product delivery across a supply chain.
This SAP SCM tutorial introduces the main supply chain planning concepts associated with SAP SCM and SAP Advanced Planning and Optimization, commonly called SAP APO. It covers demand planning, demand forecasting, supply network planning, production planning, capacity planning, deployment, and integration with transaction-processing systems.
What Is SAP Supply Chain Management?
SAP Supply Chain Management is used to plan and coordinate the movement of materials, products, and supply chain information. It helps an organization connect expected customer demand with available inventory, production capacity, procurement options, and distribution resources.
A typical supply chain includes suppliers, manufacturing plants, warehouses, distribution centers, transportation providers, and customers. SAP SCM processes help planners make decisions across these locations rather than treating each location as an isolated unit.
SAP SCM Business Processes
SAP SCM supports several connected planning and execution activities:
- Demand planning: Estimate future product demand using historical data, business assumptions, promotions, and market inputs.
- Supply planning: Determine how demand can be fulfilled using available inventory, procurement, and production resources.
- Production planning: Create feasible production plans based on material availability, resource capacity, and scheduling constraints.
- Inventory planning: Balance product availability against excess stock and storage costs.
- Distribution planning: Decide how products should move between plants, warehouses, distribution centers, and customer-facing locations.
- Deployment planning: Allocate available supply among locations when total demand is greater than available stock.
- Transportation planning: Organize product movements while considering routes, delivery dates, capacity, and transportation constraints.
SAP SCM and SAP APO
SAP APO, or SAP Advanced Planning and Optimization, is closely associated with SAP SCM. SAP APO provides planning functions that use supply chain models, planning data, constraints, and optimization techniques to support demand and supply decisions.
The major SAP APO application areas traditionally include Demand Planning, Supply Network Planning, Production Planning and Detailed Scheduling, Global Available-to-Promise, and Transportation Planning and Vehicle Scheduling.
SAP APO Demand Planning
SAP APO Demand Planning, commonly abbreviated as DP, is used to create forecasts for products, customers, regions, sales channels, or other planning dimensions.
Demand planners can work with historical sales data, statistical forecasting methods, promotional information, and manual adjustments. The resulting demand plan becomes an input for supply, production, procurement, and distribution planning.
A basic demand-planning cycle generally includes the following activities:
- Collect and prepare historical demand data.
- Define the planning level and time buckets.
- Generate a statistical forecast.
- Review forecast errors and unusual demand patterns.
- Apply business adjustments where required.
- Release the approved forecast to supply planning.
SAP APO Supply Network Planning
SAP APO Supply Network Planning, abbreviated as SNP, creates medium-term supply and distribution plans across the supply network. It considers demand, available inventory, production capabilities, procurement options, transportation lanes, and location relationships.
SNP helps answer questions such as:
- Which plant should produce a product?
- How much should be produced or procured?
- When is the supply required?
- Which warehouse should receive the available stock?
- Can the current supply network satisfy forecast demand?
- Where are capacity or material shortages likely to occur?
SAP APO Production Planning and Detailed Scheduling
SAP APO Production Planning and Detailed Scheduling, commonly called PP/DS, supports detailed production planning for materials and resources. It is used when planners need to consider exact production sequences, resource availability, setup requirements, material constraints, and order dates.
Production planning determines what should be produced and when. Detailed scheduling assigns and sequences operations on specific resources so that the production plan can be executed within the available capacity.
SAP APO Global Available-to-Promise
SAP APO Global Available-to-Promise, abbreviated as GATP, supports product availability checks during order processing. It evaluates whether a requested quantity can be confirmed for a requested date based on available supply and defined checking rules.
Depending on the business configuration, an availability check may consider current stock, planned receipts, alternative locations, alternative products, allocations, and future supply.
SAP SCM Deployment Planning
Deployment planning determines how available or expected supply should be distributed among receiving locations. It is especially relevant when several warehouses or distribution centers request the same product and the available quantity is limited.
A deployment decision can consider demand priority, target stock, confirmed requirements, available transportation options, and allocation rules. The objective is to create a practical distribution proposal that reflects both supply availability and business priorities.
SAP SCM Master Data
Supply chain planning depends on accurate master data. Incorrect products, locations, resources, transportation relationships, or planning parameters can produce unrealistic plans even when the planning run completes successfully.
Common SAP SCM master data objects include:
- Products: Materials or items that are planned, produced, procured, stored, or delivered.
- Locations: Plants, warehouses, distribution centers, suppliers, customers, or other planning points.
- Product-location combinations: Planning-specific data for a product at a particular location.
- Resources: Machines, production lines, labor groups, or other capacity-providing objects.
- Production process models or production data structures: Information describing how a product is manufactured and which components and resources are required.
- Transportation lanes: Valid product movements between locations, including transportation times and related constraints.
- Calendars: Working times, non-working periods, and availability patterns used during planning.
SAP SCM Transaction Data
Transaction data represents the current and planned business situation. SAP SCM planning processes may work with the following types of transaction data:
- Sales orders and customer requirements
- Forecast requirements
- Purchase requisitions and purchase orders
- Planned orders and production orders
- Stock and inventory records
- Stock transfer requirements
- Production and transportation receipts
- Capacity requirements
SAP SCM Integration with SAP ERP
SAP SCM planning processes commonly exchange master data and transaction data with an SAP ERP system. The ERP system handles core transactions such as purchasing, production execution, inventory movements, sales orders, and deliveries, while the planning system performs advanced supply chain calculations.
Integration must keep the planning model aligned with operational data. For example, changes to material master records, plants, work centers, orders, stock, or requirements may need to be transferred so that planning results reflect the operational system.
SAP SCM Planning Time Horizons
Supply chain decisions are made at different levels of detail depending on the planning horizon:
| Planning level | Typical focus | Examples of decisions |
|---|---|---|
| Long-term planning | Supply chain structure and capacity | Plant capacity, sourcing strategy, distribution network design |
| Medium-term planning | Demand and supply balancing | Production volumes, procurement quantities, inventory targets |
| Short-term planning | Detailed execution preparation | Order sequencing, resource assignments, deployment quantities |
The exact duration of each horizon depends on the product, production lead time, procurement lead time, and business planning cycle.
SAP SCM Planning Example
Consider a company that manufactures packaged products at two plants and distributes them through three warehouses.
- Demand Planning creates a forecast for each product and sales region.
- Supply Network Planning checks inventory, production capacity, procurement options, and transportation lanes.
- The supply plan determines which plant should produce each quantity.
- Production Planning and Detailed Scheduling sequences the production orders on available resources.
- Deployment planning allocates finished products among the three warehouses.
- Availability checks use the resulting supply picture when customer orders are processed.
This example shows why demand, supply, production, distribution, and order confirmation should use consistent planning data.
SAP SCM Configuration Learning Sequence
A beginner can study SAP SCM concepts in the following order:
- Understand basic supply chain terminology and business processes.
- Learn the relationship between SAP ERP transactions and advanced planning.
- Study products, locations, resources, calendars, and transportation lanes.
- Understand planning versions, models, time buckets, and planning horizons.
- Learn Demand Planning and forecast release.
- Study Supply Network Planning and distribution requirements.
- Learn Production Planning and Detailed Scheduling.
- Understand availability checking and deployment.
- Practice monitoring planning results, alerts, and integration errors.
SAP SCM Planning Terms
| SAP SCM term | Meaning |
|---|---|
| Demand | A requirement for a product, such as a forecast or sales order. |
| Supply | An available or planned quantity, such as stock, a purchase order, or a production receipt. |
| Planning horizon | The future period considered by a planning process. |
| Time bucket | A period such as a day, week, or month used to group planning data. |
| Capacity | The available production or transportation capability during a period. |
| Constraint | A limitation that affects the feasibility of a plan. |
| Deployment | The allocation and distribution of available supply to receiving locations. |
| Alert | A message that identifies an exception requiring planner attention. |
SAP SCM Tutorial FAQs
What is the difference between SAP SCM and SAP APO?
SAP SCM refers to the broader supply chain management solution and its related processes. SAP APO is the advanced planning component traditionally used for functions such as demand planning, supply network planning, production planning, detailed scheduling, and availability checking.
What should I learn before studying SAP SCM?
Basic knowledge of procurement, inventory, production, sales, and distribution is useful. Familiarity with SAP ERP master data and transaction flows also makes the integration concepts easier to understand.
What is the difference between demand planning and supply planning?
Demand planning estimates what customers are expected to require. Supply planning determines how that requirement can be fulfilled through inventory, procurement, production, and distribution.
Why is SAP SCM master data important?
Planning calculations depend on products, locations, resources, calendars, production data, and transportation relationships. Incomplete or incorrect master data can create shortages, excess supply, impossible schedules, or invalid transportation proposals.
SAP SCM Tutorial Editorial Checklist
- Verify that SAP SCM, SAP APO, DP, SNP, PP/DS, and GATP are expanded correctly on first use.
- Keep demand planning, supply planning, production planning, and deployment definitions distinct.
- Confirm that master data examples are separated from transaction data examples.
- Explain that planning results depend on integration and accurate operational data.
- Avoid presenting a planning proposal as an executed purchase, production, inventory, or delivery transaction.
SAP SCM Tutorial Summary
SAP SCM connects demand forecasting with supply, production, inventory, distribution, and availability planning. The main learning areas include SAP APO Demand Planning, Supply Network Planning, Production Planning and Detailed Scheduling, Global Available-to-Promise, deployment, master data, transaction data, and integration with SAP ERP.