Undo a mistake the desk made today
The administrator takes back the last thing done to a booking — check-out, check-in, cancellation, a charge — as long as the night audit has not closed the day.
Open the booking. Under Administrator · every action here is recorded the card lists what has been done to this booking today — check-in, check-out, cancellation, no-show, a room or rate change, a charge, a payment — newest first. The latest one has an Undo button. Press it, say why, and everything that action did is taken back: the status, the room, the nights it billed, the bill it closed, the transfer it raised.

Do this
- Today · undo on the card lists what has been done to this booking today, newest first — the check-in, the payment, the charge — with who did it.
- Press Undo… on the latest, pick the reason from the list, and everything that action did is taken back. The button sits only on the action that can be undone next; the card says which one is in the way.
Two rules
- Undo the later thing first. Undo works like a stack. If a payment was taken after the check-in, the payment is undone first, then the check-in. The card says which action is in the way.
- The night audit is the line. Once the audit has closed the day, what happened that day is in the books. Correct it forward instead: *Correct status…* for the row, a void or a credit note for the money.
What is recorded
Every undo is on the booking's history — who pressed it, from which machine, when, why, and exactly what was walked back: the status, the postings voided and their total, the bills reopened, the rooms put back. An undo cannot itself be undone: do the thing again instead.
What it leaves alone
A message already sent to the guest, a C-form already filed, a room housekeeping has cleaned since, an e-invoice already registered — those happened. A bill with a registered IRN refuses the undo until the IRN is cancelled on the portal.