Troubleshoot error messages when applying 3D materials to objects
While using 3D effects, in Illustrator you might encounter the following error messages and limitations:

Unsupported objects: 3D effects are not supported on raster images, Mesh, single anchor point object, etc. If you apply the effect to an unsupported object, you will receive this error message.
"3D and Materials' effect currently works only on some object types and cannot apply as multiple instances."
Complex objects: For certain complex paths, 3D effects are only partially applied. In such scenarios, you will get this error message.
"3D and Materials' effect currently does not apply entirely on some object types."
Stacking 3D effects: Stacking multiple 3D effect instances on an object is not supported as of now. If you attempt to add 3D effect to an object which already has 3D effect applied, you will get this error message.
"3D and Materials' effect currently works only on some object types and cannot apply as multiple instances."
Export as OBJ: You can export 3D effects as a 3D model in OBJ file format. This file format doesn’t include materials and only includes the shape of the object. Support for other formats that support materials will be introduced in future updates.
Optimize Illustrator performance on your operating system: Use the information in the following articles to optimize Illustrator performance on your OS.
We hope that this information helps in improving your experience of using the app. If you need further assistance, please post your query in the community, and we will do our best to assist you.
-Srishti

