I use 3Ds Max 2024 to model objects for my game with multiple materials, but when importing into the engine, the mesh parts are not displaying.The same thing happened when I used 3Ds Max 2021.The engine does not support the fbx 2021+ format. Please help me resolve this issue.

I'm no expert with the 3D in the engine, but it looks like your mesh are displaying, not the material?

have you tried setting up your material that are on the mesh part?

The FBX SDK currently used is:
2020.2.0

But the mesh is loading.

You can attach FBX file here I can check.

Does 3ds max have option to export FBX with older version?

I checked and there's no FBX 2024, the latest FBX SDK is 2020.3.7, it has minor fixes only, so please just attach the FBX and I can check.

Here is the FBX mesh, it just a basic box with multi-materials have been created in 3Ds Max 2024
https://drive.google.com/file/d/1B9RWXFe...sp=sharing

Thank you very much.
I've fixed in the source edition - https://esenthel.com/?id=doc#Accessing_Source
Materials will import correctly and be applied to correct mesh faces.
However material colors are ignored and set as white intentionally.