JinJin48

SAP Consultant | BTP · S/4HANA · US Global Rollout

June 25, 2026 · 11 min read

SAP PP Class

The Class is the master data object that defines a classification category and groups SAP objects — primarily materials — by shared properties. It acts as the container in the Classification System (CA), holding Characteristics that describe the attributes relevant to a given group. In Production Planning, Classes are used to enable material search by attribute, manage variant configuration for make-to-order products, and support reporting groupings beyond the standard material type hierarchy. This article covers Class core concepts across all modules in Part 1, and PP-specific field details in Part 2.

Part 1: Class — Core Concepts (All Modules)#

1.1 What Is the Class?#

A Class is a named category that bundles a set of Characteristics and can be assigned to SAP objects such as materials, batches, customers, equipment, or documents. The Classification System (transaction CL01) is a cross-application framework used throughout S/4HANA; its scope far exceeds PP, but PP is the module that most commonly establishes Classes as part of production master data setup.

1.2 Class Types#

The Class Type determines which SAP object category can be assigned to the class and which business scenarios are enabled. Selecting the wrong Class Type creates an incompatible assignment that the system will reject at object classification time.

Design principle: Class Type must be aligned with the object category during blueprint. A Class of Type 001 can never be assigned to a batch; Class Type 010 is required for that purpose. For variant configuration, Class Type 300 must be created in addition to — not instead of — Type 001 material classes.

1.3 Organizational Levels and Data Hierarchy#

Data hierarchy with a concrete example

Client
   │
   ├── Class "STEEL_GRADE"
   │      Class Type 001 (Material)
   │      │
   │      ├── Characteristic "TENSILE_STRENGTH"
   │      │      Numeric, Unit MPa
   │      ├── Characteristic "MATERIAL_GRADE"
   │      │      Character, S355
   │      └── Characteristic "COATING_TYPE"
   │             Character, Galvanized
   │
   └── Material RM-2001
          Steel Coil, Grade S355
          ── assigned to ──> Class "STEEL_GRADE"
          TENSILE_STRENGTH = 355 MPa
          MATERIAL_GRADE = S355
          COATING_TYPE = Galvanized

1.4 Integration with Other Master Data Objects#

The Class does not stand alone. It is the container that links Characteristics to SAP objects, and its design decisions cascade into variant configuration, material search, and quality management.

Part 2: PP-Specific Field Details#

2.0 Scope of PP Ownership#

Legend: ◎ = Owner / Critical, ○ = Direct involvement

2.1 Class Header (KLAH)#

The Class Header is the top-level definition of the classification category. It must be created and released before any Characteristics can be assigned or objects classified.

2.2 Characteristic Assignment (KSML)#

The Characteristic Assignment section defines which Characteristics are bundled into this Class and in what order they appear on classification screens. This is maintained in transaction CL02 (change class) under the “Characteristics” tab.

2.3 Material Assignment#

Material Assignment records which specific materials belong to this Class. In PP, this is the step that makes a material searchable by its classification attributes and eligible for variant configuration.

2.4 Classification Values (AUSP)#

Classification Values are the actual attribute values stored on each classified material — for example, “Color = RED” or “Weight = 2.5 kg.” They are maintained on the individual material’s Classification view in MM02, or in bulk via CL20N.

What to Read Next#

L1) Big Picture

L2-A) Master Data

L2-B) Transaction