  We study the magnitudes of soft SUSY breaking parameters in heterotic string
models with anomalous U(1) symmetry. In most cases, D-term contribution to soft
scalar masses is expected to be comparable to or dominant over other
contributions provided that supersymmetry breaking is mediated by the
gravitational interaction and/or an anomalous U(1) symmetry and the magnitude
of vacuum energy is not more than of order $m_{3/2}^2 M^2$.
