| AsBuiltTree | Realized physical product structure. An AsBuiltTree represents what was actually manufactured, assembled, installed, or delivered. It contains concrete AsBuiltItems with serial numbers, lot numbers, work order information, actual quantities, installation dates, and quality status. |
| AssemblyTree | Manufacturing-oriented assembly structure. An AssemblyTree describes how a product is organized for manufacturing or assembly. It may represent an mBOM-like structure, a manufacturing view of the product, a plant-specific assembly structure, or a structure prepared for downstream process planning and execution. |
| PartItem | Abstract superclass for all part-like Windchill concepts in this model. A PartItem clusters common attributes shared by managed parts, product tree items, assembly tree items, and as-built items. These common attributes include identity, name, description, version, lifecycle state, editing state, source-system information, and responsibility. Concrete subclasses specialize this common level for definition, product-structure usage, manufacturing-structure usage, or physical realization. |
| ProductTree | Engineering-oriented product structure. A ProductTree defines the product from the product-definition or engineering point of view. It contains a root ProductTreeItem and may represent an eBOM-like structure, a configured product structure, or another engineering decomposition interpreted from Windchill. |
| SAPMaterial | Material represented in SAP. |
| ThreeDXEngineeringItem | Engineering item represented in 3DEXPERIENCE. |