Configuration monitoring consists of measures for monitoring changes made to a specific configuration unit (KE). In this context, the configuration documents must already have been formally created for the first time and include change procedures. Change management is used to identify, describe and classify changes. The changes listed in the change request are evaluated, approved or rejected in a conference. If approved, a change notice is issued. When changing reference configurations, all possible effects (e.g., on technical subsystems, costs, etc.) must be considered. (Source: GPM)