(7)The operational risk mitigation techniques for OTC derivative contracts not cleared by a CCP, as laid down in Guideline B-7, are still insufficient when compared to the obligations provided for in Article 11(1) and 11(2) of Regulation (EU) No 648/2012 and Delegated Regulation (EU) No 149/2013 with regard to timely confirmation, portfolio compression and reconciliation, and transaction valuation. This Decision should therefore only cover the legal, supervisory and enforcement arrangements concerning dispute resolution obligations as provided for in Article 11(1) of Regulation (EU) No 648/2012 and Delegated Regulation (EU) No 149/2013 as well as those concerning margin requirements as provided for in Article 11(3) of Regulation (EU) No 648/2012 and Delegated Regulation (EU) 2016/2251.