JET has investigated one the key issues for the baseline scenario in ITER, the integration of a radiative divertor for heat load control with the use of neon and nitrogen as seed impurity. A characterization of the choice of the impurity seed on plasma confinement, neutrons, pedestal MHD stability, pedestal instabilities, core transport is given. This experimental programmed has been accompanied with extensive modelling effort with SOLPS-ITER code. If the JET results for Ne and N can be matched, this significantly increases the confidence in the ITER design basis. In this paper, first results of the benchmark exercise is given.