Client Software: ArcGIS Pro 2.5.2
Server software: ArcGIS Enterprise 10.8
In ArcGIS Pro, I have a 3D multipatch layer that I am attempting to Share as a Web Scene, a Scene, to our ArcGIS Enterprise portal. When I attempt to Share this layer, in Pro, I receive the error "00290: Cannot connect through admin URL or services URL". I can, however, successfully Share and publish from Pro a simple 2D layer to our portal as a Hosted Feature Layer. The Pro help documentation for this error says that a Scene layer cannot be shared without access to the "admin API". I am afraid that I do know what this means.
How does one access the "admin API" of our ArcGIS Enterprise 10.8 Portal from ArcGIS Pro 2.5.2 ?