In this talk we analyze the possibility to determine the partonic structure of colorless exchanges, Pomeron and Reggeon, from diffractive measurements in the four diffractive kinematic variables in ep collisions at the EIC. We present the model we use to generate the pseudodata and explain our fitting strategy. We show the results on the uncertainties in the extraction of quark and gluon parton distributions in Pomeron and Reggeon, and analyze the influence of cuts in the different kinematic variables. We consider the possibilities not only at the highest EIC energy, highest luminosity scenario but also for lower luminosities and those in a low energy, first year scenario. The EIC will be able to constrain the partonic structure of the subleading Reggeon exchange, with a similar precision to the leading Pomeron exchange.