Digitalization offers companies the chance to optimize the use of the resource information in all management functions. Maintenance is faced with the challenge of making the combination of vertical and horizontal integration of IT systems usable and thus increasing the value added contribution. The digital shadow of maintenance is understood as a digital model in which changes in the physical world have a real-time effect on the information system. The resulting potentials are better decision quality, greater planning ability, transparent controlling and optimal support for operating activities. The aim of the work is to create a reference model that can be used to model the maintenance information system. For this purpose, a modified ARIS house is constructed in which the perspectives data, functions and objectives represent the information system. Based on a comprehensive literature research the functional model will be constructed according to the principles of a generic maintenance management concept. Subsequently, the objective model is developed with which a data model can be derived from the control perspective. The last model can be seen as the digital shadow of maintenance management due to its given structure and content. The result of the work provides the model user with a tool that can be applied in practice in two ways. With the top-down approach, functions and objectives can be formulated from which the necessary data can be derived. Validation is carried out, among other things, by modeling the TPM philosophy, in which the corresponding data model is created based on the functions and goals. The second possible application takes the opposite approach and draws a bottom-up path from the available data to the achievable functions and goals. The validation of the second approach takes place in the modelling of an information system in practice (software manufacturer). The results can be used to evaluate the information system and formulate recommendations for action.