Abstract: The invention relates to a test device (1) and associated method for verifying a batch processing in a data processing device (2) comprising a first scheduling device (3) for controlling a data processing which processes the script library (5) scripts by means of a first script interface (4), thereby carrying out or controlling the operation of a company subordinate devices. The aim of said invention is to verify a batch processing without degrading a verifiable system performance. For this purpose, a second scheduling device (7) for simulating the processing of the script library (5) scripts and for transmitting said scripts to the device (1) for testing data resulting from the simulation by a second script interface (8) dependent of the first scheduling device (3) is added.