What does the HRESULT code 0x80193AFC mean?

On Windows 10 Enterprise LTSC Version 1809 Build 17763.6054 I try to run the Windows Win32 API syscall within my rust program:

windows::Win32::Management::MobileDeviceManagementRegistration::RegisterDeviceWithManagement

This function will register the device to an MDM server.

I get the following HRESULT error code: 0x80193AFC when it is run. I was not able to find this code documented anywhere So I’m not sure what the issue is?.

The same function does work on Windows 10 Pro.