The invention relates to a computer-implemented method and to a device for monitoring a technical
system (6). The technical
system (6) comprises a plurality of subsystems (5, 9, 11, 13, 15). The
system (6) is designed to carry out a plurality of functions. In order to improve monitoring, each function is assigned (A) a subset (21) of subsystems (9, 11, 15) which are involved in carrying out the function. Each subsystem (5, 9, 11, 13, 15) is assigned (B) a group of instances (8, 10, 17, 19) which are responsible for a
functional capability of the respective subsystem (5, 9, 11, 13, 15). During monitoring, the plurality of subsystems (5, 9, 11, 13, 15) are monitored (C). A result of the monitoring of the plurality of subsystems (5, 9, 11, 13, 15) of the technical system (6) is determined (D) and, on the basis of the assignments, it is determined which instance (8, 10, 17, 19) is assigned (E) to the result.