Most of the employees should be re-trained. S/4HANA is a completely new ERP system, which in many places has to be newly configured. Moreover, it provides new functions and offers a new interface. SAP experts make, of course, this change easier. However, they also need time to get used to the new S/4HANA system, its new functions and processes, and if necessary – get trained.
Thanks to the intuitiveness of S/4HANA, as well as the user-friendly new interface SAP, it is easier to get familiar with it than with the current SAP ERP system.