What is permissible and also desirable to ensure the efficient performance of assurance, is the use of audit results from third parties, provided they meet the high standards of assurance procedure and assurance reliability demanded by PwC. Assurance of selected (quantitative) information The assurance of the quantitative data in the Sustainability Report is enhanced through analytical inspections – such as the generation and review of expected values, or the conducting of trend and deviation analyses – as well as the classical scrutiny of documents.