Table 1 Systematic Error Budget in the Stacked Mass for DES RM Year-3 Volume-limited Sample Source of Error Magnitude of Error % frac. of sigma_stat Beam uncertainties <0.01% cdots Cluster mis-centering 2.78% 0.12sigma Cosmology 0.39% 0.03sigma Filtering ell_x 0.21% 0.02sigma Halo profile 0.12% 0.01sigma Residual foregrounds 2.12% 0.09sigma Total 3.53% 0.15sigma Note. This is a list of systematic errors estimated for the lensing mass measurement.