1. A method for analysis of a computer-based and data-processing model of a complex system, wherein the model comprises at least two modelling levels, on which the complex system is represented with different degrees of abstraction, and the analysis method comprises the following steps: creating a first part model of the complex system on a first modelling level by defining objects and links between these objects; creating a second part model of the complex system on a second modelling level by defining of objects and links between these objects; creating associations or relations between objects of the first and the second modelling level; creating at least one first event chain which represents an action sequence in the first modelling level and describes the action sequence by way of the objects of the first modelling level, wherein the action sequence is a sequence of actions in the complex system; creating at least one second event chain which represents the same action sequence in the complex system in the second modelling level and describes the action sequence by way of the objects of the second modelling level at a different degree of detail than at the first modelling level; as well as at least one of the following two steps performed by a data processor: automatically analysing the part models and associations and event chains set up according to the preceding steps, for determining and issuing quality information on the model itself, by determining consistency information concerning agreements and contradictions between the models on the two modelling levels, automatically analysing the part models and associations and event chains created according to the preceding steps, for obtaining information on the modelled complex system and for issuing this information, wherein the associations between the first and the second modelling level represent a partial support of the objects of the first modelling level by the objects of the second modelling level; and wherein at least a few objects on the first modelling level represent processes, wherein a process is an entirety of tasks and sequences of an organisation unit or production unit, and wherein at least some objects on the second modelling level represent elements, wherein an element is a real physical or logical unit, and wherein the support of the process by an element expresses the fact that the process requires the element in order to be able to function.