(3)Article 267 of Regulation (EU) No 575/2013 permits the use of credit ratings to determine the risk weight of a securitisation position only where that credit rating has been issued or has been endorsed by an ECAI in accordance with Regulation (EC) No 1060/2009. Further, point (b) of Article 268 of Regulation (EU) No 575/2013 makes use of a credit rating of an ECAI conditional on the ECAI having published the procedures, methodologies, assumptions and the key elements underpinning the assessments, in accordance with Regulation (EC) No 1060/2009. In addition, Article 10(3) of Regulation (EC) No 1060/2009 provides that rating categories that are attributed to structured finance instruments are clearly differentiated from rating categories used for any other entities. Therefore, it is appropriate to specify only the correspondence of the credit assessments of ECAIs to the credit quality steps set out in Chapter 5 of Regulation (EU) No 575/2013 for those rating categories to securitisation positions that meet all of those conditions.