Bedarfsplanung
Also: Materialbedarfsplanung, Bedarfsforecast, Bedarfs-Planung, MRP, Material Requirements Planning, Bedarfsermittlung und -planung
AI-generated
Demand planning refers to the systematic process by which a company determines what quantities of materials, goods, or resources are needed and when. It forms the foundation for inventory management, procurement, and warehouse planning.
Key facts
- Demand planning determines what quantities need to be procured or produced and when, thereby preventing shortfalls and excess inventory.
- A distinction is made between consumption-driven planning (based on historical data) and demand-driven planning (derived from orders and bills of materials).
- The quality of demand planning depends directly on the completeness and currency of master data and transactional data.
- Demand planning is closely interlinked with sales planning, inventory management, and purchasing – when it operates in isolation, its accuracy declines significantly.
- AI-driven forecasting methods can improve planning accuracy, but require a high-quality historical data foundation and system-level integration.
What is demand planning?
Demand planning is the structured process of identifying future material and goods requirements based on sales plans, consumption data, and inventory levels. It answers the question of what needs to be available, in what quantity, and at what time – and derives concrete requirements for purchasing, production, and logistics accordingly. Without reliable demand planning, companies face either costly excess inventory or critical shortfalls that disrupt operations.
How does demand planning work in practice?
In practice, two fundamental methods are distinguished: consumption-driven and demand-driven planning. The consumption-driven approach statistically extrapolates historical usage data, often supplemented by seasonal adjustments and trend corrections. Demand-driven planning, by contrast, derives requirements directly from orders, production plans, or bills of materials – typically within an MRP (Material Requirements Planning) framework, as implemented in ERP systems.
The planning process typically involves the following steps:
- Determining primary demand from sales planning or customer orders
- Deriving secondary demand via bills of materials and formulas
- Reconciling with existing inventory levels and already-triggered orders
- Calculating net requirements and defining order quantities and timing
- Transferring planning results to inventory management and purchasing
Modern systems additionally integrate external data sources such as supplier capacities, market developments, or real-time inventory data from connected warehouse systems. The use of AI-driven forecasting methods is growing in importance, though quality and effort vary considerably depending on the vendor and the quality of available data.
What matters when selecting an approach?
The effectiveness of demand planning depends critically on the quality of input data – in particular, well-maintained master data, historical consumption records, and up-to-date inventory management. Equally important is how closely demand planning and sales planning are aligned, both organizationally and at the system level. Planning systems that operate in isolation from sales or production typically deliver inferior results compared to integrated solutions.
When selecting an appropriate approach or system, you should also consider how volatile your demand is, how long your lead times are, and how significantly your product range is subject to seasonal fluctuations. A one-size-fits-all planning approach rarely works equally well across all product groups – differentiated control, for example based on ABC analysis, is advisable in most warehouse operations.
Related terms
- ABC-Analyse
ABC analysis is a method for classifying items, vendors, or processes into three priority classes (A, B, C) based on their economic significance. It forms the basis for differentiated decision-making in warehousing, inventory management, and procurement.
- Absatzplanung
Sales planning refers to the systematic forecasting of future sales volumes for defined products, regions, or channels. It forms the foundation for all downstream planning processes in production, procurement, and logistics.
- Absatzprognose
The sales forecast estimates future demand for products or items over a defined period. It forms the basis for inventory, capacity, and procurement planning in logistics and purchasing.
- Artikelstammdaten
Item master data refers to the permanently valid base data of an item – such as dimensions, weight, packaging units, hazardous goods classification, and best-before date relevance. It forms the foundation for all logistical, procurement-related, and system-driven processes along the supply chain.
- Bedarfsermittlung
Requirements planning refers to the systematic process by which an organization's future material or goods requirements are determined in terms of quantity and timing. It forms the basis for inventory management, procurement, and warehouse planning.
- Bedarfsmenge
The demand quantity refers to the quantity of an item required at a specific point in time or within a planning period. It forms the basis for ordering decisions, inventory planning, and production planning.