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I have implemented a Forge Viewer app in JavaScript using the Autodesk Model Derivative API on the backend. It works fine for IFC files up to version 3, but it does not work for IFC v4 files. It is giving error like Model is Empty, there is not geometry present for the viewer to show.Error Message.

When I upload the same IFC v4 file directly into the Autodesk Forge Viewer (online), it works fine — the model is displayed correctly.

Is there any way to make Forge Viewer support IFC v4 files, or any workaround available?

I tried loading an IFC v4 file into my Autodesk Forge Viewer using the Model Derivative API in my Viewer App. I expected the viewer to display the model the same way it works for IFC v2x3 files. However, the conversion fails, and the IFC v4 file does not load in the viewer.

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  • What is the IFC conversion method you used when calling POST job? To support IFC4, we should use v4, or v3. If you don't specify, it will use the legacy one, which doesn't support IFC4. i.sstatic.net/QStHbaln.png Commented Sep 2 at 4:40
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