Check-In Returns Only the Units That Went Out

When a booking is checked out by scanning only some of its items and then closed with the one-click Check in button, Shelf settles each quantity-tracked line on it. For a used-up (one-way) line that has worked by what actually left since 6 October 2026. A returnable (two-way) line still did not ask: it was logged as returned in full, so a line of 3 units that never left the shelf showed 3 / 3 on the booking and returned 3 pcs in the asset's activity.

Since 26 October 2026 the check-in returns only the units a line sent out. A line that never left gets no entry at all, a line partly handed over returns only the units still out, and the booking completes as before. The rule is the one the rest of Shelf uses: only units that actually departed can be returned or used up. Bookings closed the old way keep their earlier entries. See The mixed state: items that never left.