Unable to add features to or edit geometries of the geometric network containing z-values from ArcGIS Field Maps.

Additional Information

Workaround

1. Copy feature classes from the geometric network using the Feature Class to Geodatabase geoprocessing tool and under Environments, select disable for the Output has Z Values option.
2. Add feature classes to a feature dataset and create a geometric network.
3. Publish the geometric network as a feature service with referenced data to Portal for ArcGIS 10.9.1 with feature access enabled and no default z-value.
4. In Portal for ArcGIS, save the feature service to a web map in Map Viewer.
5. Open the map in ArcGIS Field Maps and click the Add button to add a feature and select the feature type.
6. Add the geometry and/or attributes and click Save.

This workaround works for data in the coordinate system WGS84 Web Mercator (Auxiliary Sphere).

Steps to Reproduce