(13)Pursuant to Article 6(1), fourth subparagraph, of Regulation (EU) 2017/2402, only servicers that can demonstrate expertise in the servicing of exposures of similar nature to the securitised exposures may act as retainers in a traditional NPE securitisation. It is therefore appropriate to set out the criteria that servicers should meet to be able to demonstrate that they have the required expertise in servicing exposures that are similar to those securitised.