Probleme bei der Umstellung von IT-Systemen der Bundeswehr auf SAP S/4 HANA

This question concerns problems encountered by the German Armed Forces (Bundeswehr) during the transition of their IT systems to SAP S/4 HANA. It seeks information on the nature and extent of these issues. The focus is on the impact of these IT system problems on the Bundeswehr's operational readiness and efficiency. It also asks about planned solutions and timelines.