Every box on the sweep.
The manual version of tracking is a morning ritual: a coordinator opens each carrier portal in turn, re-keys milestones into an Excel sheet, and hopes nothing moved since it saved. The desk replaces the ritual with a watch — resolving each shipment the way freight is actually numbered (booking number, then BL, then container), and holding every milestone current from empty gate-out to empty return. Nothing depends on someone remembering to look.