Importing 3D models to an ArcGIS Online feature layer requires a series of actions:
In ArcGIS Pro:
- Creating a 3D Object feature class
- Add storage format GLB
- Create a zip file from the FGDB
In ArcGIS Online:
- Add zip file as an Item
- Publish a feature service and enable editing
- Publish a scene service from the feature service.
The idea is to create a 3D template that is ready to import 3D models. Using the Add Item menu - creating a new Scene layer based on a generic template, skipping all the previous steps.
Thanks
Yigal