
Article 1 
Article 12(2) of Regulation (EU) No 1071/2013 (ECB/2013/33) is replaced by the following:'
2. The reserve base data for the tail institutions for two reserve maintenance periods shall be based on end-of-quarter data collected by the NCBs within 28 working days following the end of the quarter to which they relate.'.
Article 2 
This Regulation shall enter into force on the day following that of its publication in the Official Journal of the European Union.
Done at Frankfurt am Main, 10 December 2014.
For the Governing Council of the ECB
The President of the ECB
Mario DRAGHI