A method is disclosed. In at least one embodiment, the method includes providing a system specification of the system; deriving a number N1 of base patterns dependent on the system specification, a base pattern representing at least one service and having a number N2 of parameterisable events and a parameterisable control section representing a control flow and/or a data flow between the events; selecting a number N3, wherein N3≦N1, of base patterns and providing a control structure representing a control flow and/or a data flow between the selected base patterns dependent on an event trace expected as a result of the system run; and providing the reference data having at least the selected base patterns and the provided control structure.