To add the 3D product navigate to Product Configurator ➤ Configurator Settings you will land on the Configurator Setting page.
You can also import the product by clicking on the Import button. You can download the sample file by clicking on the Download icon and uploading the file. After uploading the file click on the Submit button.
After uploading the file if any detail is missing in the file then you will get the Failed GLB File status.
If the uploaded file has the correct details, it will start importing into the system and the GLB File status will be In Queue.
Once the product details are completely loaded then you will get the Completed status.
Note: You have to upload the GLB file at the magento root (pub/media/3dproductconfigurator/glb/).