Article - CS53401
Error "Parameter <PTC_XXXX_YYYY> is not defined. The material is invalid." appears in Creo Parametric
Modified: 23-Jul-2025
Applies To
- Creo Parametric 1.0 to 12.4
- Pro/ENGINEER and Creo Elements/Pro Wildfire to Wildfire 5.0
- Creo+
Description
- Warning reported when modifying material properties
- Parameter PTC_HARDNESS_TYPE is not defined. The material is invalid.
- Parameter PTC_HARDNESS is not defined. The material is invalid.
- Parameter PTC_CONDITION is not defined. The material is invalid.

- Warning when attempting to save a material file to model or library
- Are there mandatory Parameters that have to be defined in the Material file
- Which Parameters are dependent on each other in Material definition
- When saving a copy of existing material file with both Young’s Modulus and Poisson’s Ratio, unable to remove just one of the material properties
This is a printer-friendly version of Article 53401 and may be out of date. For the latest version click CS53401