MDL042 - Invalid Material Fraction¶ Description¶ Validation error MDL042. Category¶ Model Errors Severity¶ error Common Causes¶ Input data does not meet validation requirements How to Fix¶ Review the error message and correct the input data. Example¶ // Example will vary based on error See Also¶ Error Overview Was this page helpful? Thanks for your feedback! Thanks for your feedback! Help us improve by opening an issue.