Only once the data requirements are defined, based on international standards, can thequestion of the supporting IT tools be answered. BIM software itself cannotaccommodate the required O&M data, which are not just a list of parameters butstructured, complex, data, as shown in the figure below. Indeed, mapping betweenCOBie and common BIM formats such as Revit shows that complex data such as spareparts, preventive maintenance instructions, etc. cannot be easily stored inside the modelitself.