  The lack of time-reversal symmetry and Weyl fermions give exotic transport
properties to Co-based Heusler alloys. In the present study, we have
investigated the role of chemical disorder on the variation of Weyl points in
Co$_2$Ti$_{1-x}$V$_{x}$Sn magnetic Weyl semimetal candidate. We employ the
first principle approach to track the evolution of the nodal lines responsible
for the appearance of Weyl node in Co$_2$TiSn as a function of V substitution
in place of Ti. By increasing the V concentration in place of Ti, the nodal
line moves toward fermi level and remains at Fermi level around the middle
composition. Further increase of the V content, leads shifting of nodal line
away from Fermi level. Density of state calculation shows half-metallic
behavior for the entire range of composition. The magnetic moment on each Co
atom as a function of V concentration increases linearly up to x=0.4, and after
that, it starts decreasing. The first-principles calculations reveal that via
replacing almost half of the Ti with V, the intrinsic anomalous Hall
conductivity increased twice as compared to the undoped composition. Our
results indicate that the composition close to the 50% V doped Co$_2$TiSn, will
be an ideal composition for the experimental investigation of Weyl physics.
