(55)Delegated Regulation (EU) 2015/35 does not specify under which conditions the use of ‘method 2’, as referred to in Article 233 of Directive 2009/138/EC, is to take precedence over integration techniques. To address that gap, insurance and reinsurance groups should demonstrate the appropriateness of the integration techniques they apply and should justify to the satisfaction of their supervisory authority why those integration techniques are more suitable than the application of method 2.