Material Master Data Definition
Material master data is the core, long-term information a company keeps about every material it buys, produces, stores, or sells, such as raw materials, components, finished goods, spare parts, and packaging. Each material has one central record, often called the material master, that departments across the company use as their shared reference. The term is most common in manufacturing and in enterprise resource planning (ERP) systems, the software companies use to run purchasing, production, inventory, and finance.
What does material master data include?
A material master record typically holds several groups of information, each used by a different part of the business:
- Basic data: material number, description, material type, unit of measure, weight, dimensions, and material group.
- Purchasing data: preferred suppliers, ordering units, and delivery times.
- Planning and production data: how the material is made or sourced, reorder levels, and production lead times.
- Storage and warehouse data: storage conditions, shelf life, and handling requirements.
- Sales data: sales units, delivery plants, and tax classifications.
- Accounting data: how the material is valued and which accounts its costs are posted to.
Some of this information applies across the whole company, while other parts can differ by factory, warehouse, or sales region.
How is it different from product master data?
The two overlap, but they have different scopes. Product master data usually describes the items a company sells, with a focus on what customers and sales channels need to know. Material master data is broader: it also covers items that are never sold, such as raw materials, internal components, and maintenance supplies, and it focuses on operational details like planning, storage, and valuation. In many companies, a finished product exists both as a material in the ERP system and as a product record used for sales and marketing.
Why does material master data matter?
Nearly every operational process relies on the material master, so errors spread quickly. A wrong unit of measure can cause incorrect purchase orders, missing weights can disrupt shipping, and duplicate records for the same material can lead to excess inventory, split purchasing volumes, and inaccurate stock reports. Incorrect accounting data can also affect how inventory is valued in financial statements.
How is material master data managed?
Because so many teams depend on it, creating and changing material records is usually controlled. Common practices include:
- Defined ownership: each group of fields is maintained by the team responsible for it, such as purchasing or finance.
- Approval steps: new materials and major changes are reviewed before they become active.
- Naming and classification rules: consistent descriptions and material groups help prevent duplicates.
- Central management: many organizations use a master data management (MDM) approach to keep material data consistent across multiple ERP systems, factories, or companies within a group.