1.The ECB and NCBs shall carry out initial DQM and regular DQM. In doing so they shall verify item-by-item output feed data and CSEC aggregate statistics, regardless of the source of such data or statistics.
2.DQM shall be applied to DQM targets 1, 2, 3a and 3b and to the corresponding DQM metrics, as specified in Annex II to this Guideline. These metrics shall be based on end-month data that are updated by the ECB on a daily basis subject to the applicable ESCB service level requirements.
3.For the attributes covered by Annex II, the ECB and NCBs shall apply DQM thresholds at a level that ensures the quality of output feed data to support the uses for these attributes as set out in Annex III to this Guideline.
4.The ECB and NCBs shall verify output feed data to the extent that, pursuant to DQM metrics, all DQM exceptions for DQM targets 1, 3a and 3b have been verified to reach the DQM thresholds.
5.The ECB and NCBs shall verify the initial and regular CSEC aggregate statistics to the extent that all DQM exceptions for DQM target 2 have been verified to reach the DQM thresholds.
6.NCBs shall correct input data in accordance with the agreed DQM workflow by using the CSDB system or by providing input data files to the ECB, as appropriate.