(13)There are certain requirements for STS traditional securitisations that are not appropriate for STS on-balance-sheet securitisations due to inherent differences between both types of securitisation, in particular due to the fact that, in synthetic securitisations, the risk transfer is achieved via a credit protection agreement instead of a sale of the underlying assets. Therefore, the STS criteria should be adapted, where necessary, in order to take those differences into account. Furthermore, it is necessary to introduce a set of new requirements, specific to synthetic securitisations, to ensure that the STS framework targets only on-balance-sheet synthetic securitisations and that the credit protection agreement is structured to adequately protect the position of both the originator and the investor. That new set of requirements should seek to address counterparty credit risk for both the originator and the investor.