Solution : https://service.sap.com/sap/support/notes/45725 (SAP Service marketplace login required)
Key words :
additional key words rvador01, item category, document total, purely informative, standard behavior, invoice printout, statistics, prerequisites, note 381348
Related Notes :
381348 | Using user exit, customer exit, VOFM in SD |
81687 | Billing document printout - collective note |