SharePoint Online - Enable Scheduling via CSOM on Modern Pages (Site Pages)

Hi miguelisidoro,

In case you are still interested in knowing this, or maybe someone else comes across this question. Scheduling publishing for a SharePoint modern page in SharePoint online can be done as follows.

• Using PNP PowerShell

Connect-PnPOnline https://test.sharepoint.com/sites/test -Interactive
$page = Get-PnPPage "test.aspx"
$date = get-date
$date = $date.AddDays(1)
$page.SchedulePublish($date)​​

• Using Rest

https://test.sharepoint.com/sites/test/_api/sitepages/pages(6171)/schedulepublish​​

        Note: 6171 is the page item Id, which can be found in Site Pages library.

Moreover, please note that the above REST call works if the page item has values in OData__ScheduledVersion and OData__PublishStartDate. 

• OData__ScheduledVersion: is the version number to publish, which should be the value of the property owshiddenversion.
• OData__PublishStartDate: is the publishing date/time