See this page for the write up and error messages I hit along the road with Microsoft OneDrive. Also a 20% off coupon for Google G Suite:
Errors such as:
Warning: Could not display the list of backups in the Microsoft OneDrive Backup storage: Unable to get dumps list: Transport error: Extension transport: ext://one-drive-backup/server: The request has been throttled. Please check the storage settings.
Harness not finished running at /opt/psa/PMM/agents/shared/Storage/ArchiveStorage.pm line 196.