Many organizations want to deploy custom branded wallpapers and lockscreens on corporate managed devices. Doing this with Microsoft Intune is natively limited to Windows 10 Enterprise and Education. Follow this guide to see how you can do this with Intune and PowerShell toghether with Azure Storage Blobs.
If you are running Windows autopilot on devices you may experience issues during enrollment/configuration after the 1903 update.
The issue comes when deploying Windows store apps with autopilot, and you may get faced with the enrollment process giving you an error when it gets to this step.