  In neutrino oscillation experiments precise measurement of neutrino
oscillation parameters is of prime importance as well as a challenge. To
improve the statistics, presently running and proposed experiments are using
heavy nuclear targets. These targets introduce nuclear effects and the
quantification of these effects on neutrino oscillation parameters will be
decisive in the prediction of neutrino oscillation physics. Limited
understanding of neutrino nucleus interactions and inaccurate reconstruction of
neutrino energy causes uncertainty in the cross section. The error in the
determination of cross section which contributes to systematic error introduces
error in the neutrino mixing parameters that are determined by these
experiments. In this work we focus on the variation in the predictions of DUNE
potential, arising due to systematic uncertainties, using two different event
generators-GENIE and GiBUU. These generators have different and independent
cross-section models. To check the DUNE potential with the two generators as
mentioned we have checked the senstivity studies of DUNE for CP violation, mass
hierarchy and octant degeneracy.
