(10)In the context of securitisation transactions, the originator’s or, where applicable, the original lender’s lending standards and characteristics and the servicer’s servicing standards and characteristics are essential risk drivers in relation to the exposures underlying the securitisation. Those risk drivers should therefore always be assessed as potential risk drivers when developing an internal model for calculating K IRB in relation to qualifying securitised exposures, unless disregarding them is justified. The implications of such risk drivers could be reflected either by considering them when assigning the exposures to grades or pools, or by using different calibration segments for different originators and different servicers. Where the institution calculating K IRB in relation to qualifying securitised exposures is itself the originator or the original lender or the servicer of the securitisation, it should not be required to take its own standards and characteristics into account as an additional risk driver.