2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/218242We derive restrictions on collisional reconnection under the conditions in near-Earth space. The arguments are based on the precise definition and estimates of the resistive scale $L_η$ at the ion inertial site in collisionless reconnection, i.e. in the so-called `ion diffusion region' which is the region of Hall-current flow.5 pages, 1 figure, LaTex manuscript submitted for publication to EPLSpace Physicstext