(2)To enhance monetary policy and financial stability analyses for the euro area and the Union, to contribute to the production of secondary statistics, to fulfil the euro area reporting commitments on debt securities issuance statistics in the context of the G20 Data Gaps Initiative and to assess the role of the euro in international financial markets, monthly securities issues statistics covering stock and flow aggregates of securities issuances are produced from CSDB item-by-item data (hereinafter ‘CSEC aggregate statistics’). Accordingly, CSEC aggregate statistics should be compiled in the CSDB, and national central banks of the Member States whose currency is the euro (hereinafter the ‘NCBs’) and the European Central Bank (ECB) should be responsible for the verification of CSEC aggregate statistics and for the DQM of the underlying CSDB item-by-item data.