Forecasted errors on the dark energy equation of states, σ₈, and Ω_m for a 3×2pt analysis. Top two rows: constraints as a function of A₀, which changes the amplitude of the SSC response. Bottom two rows: constraints as a function of A₁, which changes the scale dependence of the SSC response. Dotted lines show the value for the fiducial covariance, and the dashed lines are ±10% around the dotted line.