Troubleshoot model processing issues

A model may not successfully process for the following reasons:

• The model file is not a supported file format or version
• The model file is valid, but does not match the model type supported by the model stack
• The model file has an error in the content, or there was an issue with the model processor
• The model file is too large

The model file is not a supported file format

Supported model formats are IFC 2x3, IFC 4 and IFC 4.1, as well as RVT (v2017 to v2025). If an unsupported file format is uploaded, the model won’t successfully process and there will be an error. The file extension must also be correct.

Please refer to Adding a new Model Stack for detail on supported file extensions.

The model type is displayed as shown below

An issue with the model file or processor

There are three reasons for file or processing issues:

1. The supplied IFC or Revit file has an export error which causes the model to fail to meet the IFC or Revit schema standard.  
   Note: If the IFC or Revit file export doesn’t match the schema standard leading to process errors, it’s worth discussing the issue with the vendor of the export tool as you may not be getting all the information in your model that you expect.
2. A file related issue occurred when processing the file.  
3. A system processing error occurred.

If you believe the file is a supported version and there are no errors in it, contact us so we can investigate the issue.

The model file is too large

There is a size limitation for processing Revit files. An error message will advise the maximum file size (typically 2GB). We suggest you divide up a model by discipline to reduce its size.

IFC files have no size limitation.