How is it possible to extract Project stock Delivered?

Dear Guru's,

we need to extract the project stock delivered. In the 'Stock Overview' is it possible (see the attached screenshot), but we are not able to find a data source with this information. Is it possibile to extract the data via report and web service? The 'Confirmation Journal' contains the movements (with the project information) but we need to query for a project the currenty stock delivered.

Regards and thanks in advance

PS: we have already checked the link https://archive.sap.com/discussions/thread/3912699, but is not ok for us.

projectstock-stockoverview.png