A virtual system is a system that can not be directly connected for online management. The reason may be for example the absence of a suitable system connector. The virtual system is basically only a registration mode, where for each system change is generated the implementation request (notification) that is assigned to the particular implementer. This implementer must ensure that the change is made to the target system. In other words, IdM "knows" what the user should have on the system for accounts and permissions, but on the real system this is executed by the implementer (administrator).