Data Exchange > Interface > Working with Data Exchange Formats > STEP > Overview of STEP Files > About Transferring STEP Geometric Validation Properties Based on Material Definition
About Transferring STEP Geometric Validation Properties Based on Material Definition
The export of STEP geometric validation properties depends on the complete material definition of the Creo models so that the mass property values are calculated for the Creo models.
The geometric validation properties are exported in the following instances:
All bodies of parts, except empty and construction bodies, are assigned materials.
The material assigned to all part components of assemblies are complete.
The materials assigned must have at least a density value defined. Material assigned without density defined cannot be used to calculate mass properties.
When assemblies are exported, the validation properties are calculated for part or subassembly components that have the required material definition, even if the material definition is incomplete at the top-level and other sub-assembly levels.
If the geometric validation properties are not exported or only partially exported, the STEP export log displays a warning message that all geometry validation properties are not exported to the STEP file format.
For import, if geometric validation properties are stored in the source STEP files, but the materials are missing or are partially missing in the STEP files, the validation section of the STEP Import Log lists the validation property values as NA as they cannot be calculated in Creo. The STEP Import Log displays a warning that the comparison of the import validation property values is incomplete because of missing material or density assignments.