I have a corrected answer to add to an archived question. https://archive.sap.com/discussions/thread/3366849 We had the same question and SAP advanced technical team took over 10 days to come up with the proper answer... It turns out there is ...

Is there any relationship between table VBRP Billing document and VTTP to get the shipment no., for the delivery in VBRP-VGBEL where vgtyp = 'J', but that doesn't work for credit notes where the reference is of the reference, and if its a cancellatio...