Reporting on Project Online (PWA) Timesheets

That really depends on what you're looking to see... Status of timesheet submission, actual hours, both?

For starters, you'll likely use oData connections and Power Query in Excel or PowerBI to make the reports.

Here's the formatting information for the odata version used by Project online: http://www.odata.org/documentation/odata-version-2-0/uri-conventions/

Here's the function reference for working with Power Query:

https://msdn.microsoft.com/query-bi/m/power-query-m-function-reference

Here's where you find the tables your data are stored in

https://sitenamehere.sharepoint.com/sites/pwa/_api/ProjectData/

Add $metadata to the end of that string to see all the attributes and data types

https://sitenamehere.sharepoint.com/sites/pwa/_api/ProjectData/$metadata

Use the odata reference above to tack on to those URLs to filter some information and select certain things. For example:

https://sitenamehere.sharepoint.com/sites/pwa/_api/ProjectData/TimesheetLines?$filter=ActualWorkBillable gt 0 & $select=ProjectId,ProjectName,TaskName,TimesheetOwnerId,TimesheetOwner,ActualWorkBillable,TimesheetPeriodId,TimesheetStatus

You can plug that straight into IE or your browser of choice to see some data return. Best, though, would be to go to the data tab in Excel, New query, From other sources, From Odata feed. Then build / merge / format other queries to your heart's content.

You can find samples in the TechNet gallery. Here's one I worked up since Project Online doesn't have a "Not yet started" stats for timesheets, but that's one of the most important for us!

https://gallery.technet.microsoft.com/Timesheet-Status-Report-37b95da2