The small-R jet uncertainties are relevant for most of the channels in the combination, including those with leptonic final states that contain at least one neutrino, due to the impact of those uncertainties on the E miss T measurement. The uncertainties in the jet energy scale and resolution are derived by comparing the response between the **data** and the simulation in various kinematic regions and event topologies. Additional contributions to this uncertainty come from the dependence on the pileup activity and on the flavor composition of the jets as well as the punchthrough of the energy from the calorimeter into the muon spectrometer. An uncertainty in the efficiency for jets to satisfy the JVT requirements is assessed. The small-R jet uncertainties are summarized in Table VI. For large-R jets, the uncertainties in the energy, mass, and D 2 scales are estimated by comparing the ratio of calorimeter-based to track-based jet p T measurements in dijet events between the **data** and the simulation. The uncertainties in the jet mass resolution and jet energy resolution as well as D 2 are assessed by applying additional smearing of the jet observables according to the uncertainty in their resolution measurements. A summary of the large-R jet systematic uncertainties is provided in Table VII. The flavor-tagging uncertainty is evaluated by varying the data-to-MC corrections in various kinematic regions, based on the measured tagging efficiency and mistag rates. These variations are applied separately to b-hadron jets, c-hadron jets, and light (quark or gluon) jets, leading to three uncorrelated systematic uncertainties. An additional uncertainty is included due to the extrapolation for the jets with p T beyond the kinematic reach of the **data** calibration. The flavor-tagging uncertainties are summarized in Table VIII.