  We investigate from first principles the field-like spin-orbit torques (SOTs)
in a Ag$_{2}$Bi-terminated Ag(111) film grown on ferromagnetic Fe(110). We find
that a large part of the SOT arises from the spin-orbit interaction (SOI) in
the Ag$_{2}$Bi layer far away from the Fe layers. These results clearly hint at
a long range spin transfer in the direction perpendicular to the film that does
not originate in the spin Hall effect. In order to bring evidence of the
non-local character of the computed SOT, we show that the torque acting on the
Fe layers can be engineered by the introduction of Bi vacancies in the
Ag$_{2}$Bi layer. Overall, we find a drastic dependence of the SOT on the
disorder type, which we explain by a complex interplay of different
contributions to the SOT in the Brillouin zone.
