Solution : https://service.sap.com/sap/support/notes/45686 (SAP Service marketplace login required)
Key words :
additional key words print, message vf032 appears, bill sales orders, field vbrk-fktyp, print transaction vf31, parameter 'order-related', order-related billing, transaction vf31, fktyp = 'd', 'order-related'
Related Notes :
| 61612 | PO number and PO date in billing document printout |
| 31206 | Collective billing - Order/Delivery-related |