Create UserProfile Properties programmatically in SPO
Currently there is no API available to create custom UserProfile properties (and/or sections) in SharePoint Online. Are there any plans (to make this part of the Tenant administration namespace so) this can also be set via code/script as opposed to GUI only?
Robin Meure commented
"Note: We cannot automate this step because it is not YET possible to use the Client Side Object Model, or the REST API of SharePoint Online, to create a custom User Profile property."
Does this imply that it is in the works? ;)