1. A method for commissioning MES components (K), particularly maintenance management components, characterized by the sequence of the following steps: a) relevant data are extracted from engineering documents (AD 1, AD 2 ), b) the relevant data are combined to form at least one document or one file (CRD), c) the information in these documents or files is mapped into a hierarchic installation structure (HAS) on the basis of a prescribable installation identification structure (AKZ), d) this hierarchic installation structure (HAS) is loaded into the respective MES component (K).