[en] A full finite-range second order DWBA analysis is made for ⁴⁸Ca(³He, t)⁴⁸Sc at 23 MeV leading to the lowest 0⁺ approximately 7⁺ states of the [fsub(7/2)^-1 fsub(7/2)] configuration taking into account both ³He-α-t and ³He-d-t two-step processes. The effect of the finite-range of the form factors strongly reduces the contribution of ³He-α-t process and the nonorthogonality corrections drastically change the contribution of ³He-d-t process. Because of these effects the contributions of both processes have about the same magnitude. (Auth.)