A method for performing configuration of a control unit test system with hardware components connected thereto, wherein control units can be tested with the test system in an environment simulated by the test system by means of a model, and wherein the test system comprises at least one computer, in particular a computer executing the model, as well as hardware components, connected to one another by means of at least one network, in which at least a portion of the hardware components comprises a dedicated server (MIS) that, by means of communication, provides access to the configuration data associated with the hardware component, in particular stored in the hardware component, and the model and/or the hardware component is adapted, in particular configured, as a function of the configuration data that are made accessible.