Primärbedarf
Also: Primärbedarf, Primärbedarfe, Planprimärbedarf, Primärer Bedarf
AI-generated
Primary demand refers to the demand for finished products or saleable items that arises directly from sales planning, customer orders, or the production program. It forms the starting point for all material requirements planning within a company.
Key facts
- Primary demand is the demand for finished products or saleable items and forms the starting point for all material requirements planning.
- It arises either plan-driven from sales forecasts or order-driven from specific customer orders — often as a combination of both sources.
- From primary demand, secondary demands for assemblies and components are derived via bills of materials.
- The accuracy of primary demand planning directly influences inventory levels, delivery capability, and procurement costs.
What is primary demand?
Primary demand is the demand for products that a company sells on the market or delivers directly to customers. This includes finished goods, trade merchandise, and spare parts that appear as independent sales units. Primary demand sits at the top of the demand hierarchy and is therefore the foundation for all downstream planning: only once it is clear what needs to be sold and in what quantities is it possible to determine which assemblies, components, and materials are required.
How does primary demand arise and how is it used in practice?
Primary demand can arise in two ways: plan-driven or order-driven. In the plan-driven case, it is derived from sales forecasts or a production program — typical for series manufacturers producing to stock. In the order-driven case, a specific customer order triggers the demand — typical for make-to-order or project manufacturing. In practice, many companies operate with a hybrid approach in which forecast demand and actual demand are offset against each other.
From primary demand, secondary demands for assemblies and individual components are derived via bills of materials and formulas. Tertiary demand for auxiliaries and consumables is in turn derived from secondary demand. This three-level demand hierarchy is the foundation of every MRP run (Material Requirements Planning) in ERP systems.
- Sales planning: Planned quantities from forecast models or sales planning feed into material planning as primary demand.
- Customer order: Confirmed orders generate firm primary demand, which replaces forecasts in full or in part.
- Production program: In the manufacturing industry, the production program defines primary demand per planning period.
What matters when planning?
The quality of input data is critical: an inaccurate sales forecast leads to overstocking or understocking at every downstream level. The stability of the forecast and the handling of forecast errors — for example through safety stocks or flexible supply contracts — are therefore central issues. It also needs to be determined which items are relevant for planning and which are better managed on an order-driven basis. Depending on the vendor, ERP systems differ in how they offset planned and order-based demand and how flexibly planning periods can be configured. The required service level per item group also influences how much buffer is built into primary demand planning.
Related terms
- 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.
- Auftragsfertigung
Make-to-order refers to a production model in which the manufacture of a product does not begin until a specific customer order has been received. Unlike make-to-stock production, goods are produced individually for each customer and demand-driven.
- 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.
- Bedarfsplanung
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.
- Beschaffungsplanung
Procurement planning refers to the process by which a company systematically determines which materials or goods need to be sourced, in what quantities, at what time, and from which suppliers.
- Bestandsführung
Inventory management refers to the system-supported administration and continuous updating of all warehouse and material stocks within a company. It forms the basis for planning, procurement and accounting – and ensures that the book inventory and physical inventory are in agreement at all times.
- Bestandsmanagement
Inventory management refers to the systematic planning, control, and monitoring of stock levels across the entire supply chain. The goal is to ensure delivery capability while keeping capital commitment and warehousing costs within economically viable limits.
- Disposition
Disposition refers to the operational planning and control of resources, quantities, and orders in logistics – for example in transport or materials disposition. It encompasses capacity assignment, scheduling, prioritization, and response to disruptions.