The report profile specifies the reporting framework, shows how data was collected, and describes how the content of the report was determined. We use indicators to facilitate comparison of our ecological, economic and social performance. The figures have been subjected to a limited assurance audit. We have compiled our goals into a single overview. The GRI Index documents our fulfillment of the requirements of the GRI guidelines on sustainability reporting. In the "Communication on Progress for the Global Compact", we describe the implementation of the Compact's ten principles. We have issued a statement of compliance  with the German Sustainability Code.