1. DQM competent authorities shall carry out initial DQM and regular DQM. In doing so they shall verify output feed data, regardless of its source.
2. DQM competent authorities shall apply DQM metrics in accordance with Annex I.
3. For the attributes covered by Annex I, DQM competent authorities shall apply DQM thresholds at a level that ensures the quality of output feed data in accordance with the requirements to support the uses for these respective attributes as set out in Annex II.