** ERROR 99599 ** The reference thickness value in the properties of the preform assigned to one or more preform surface elements is outside the expected range. Please correct the value and rerun the analysis.
The fiber mat reference thickness is outside the expected range, meaning it is either too small or too large.
If the preform is from the System database (supplied with Autodesk Simulation Moldflow Insight), contact datafittingmoldflow@autodesk.com. If the material is from a local database (user defined), enter the appropriate value in the preform surface properties, and re-run the analysis. This value is set in the Preform dialog by selecting the preform surface on the model. Right-click and select Properties, then Preform Edit..., Preform Properties tab.