Reopening a settled bill
A bill closed at zero or in credit is reopened only by an account administrator; then a charge can be voided, money refunded, and the bill closed again — every step with a name on it.
A guest booked two nights, left after one, and a new desk team charged retention for the night not slept — when the night had in fact been refunded. The bill closed at zero. Every tool to put it right existed: void a charge, refund a payment, close the bill. None was reachable, because a bill that closed owing nothing had no door back in.

Do this
- Open the departed booking (Find it by name or reference) and its Folio. The bill reads *closed*.
- Reopen the bill — an administrator sees it on any closed bill, and a written reason is required. The reopening records the balance it found and that the bill was settled.
- The void links appear beside each charge; a void takes its GST back with it. Send money back is there if your login may refund.
- When the balance is back to zero, Close the bill again, so a guest who left a week ago is not carrying an open bill. A bill in credit cannot be closed — money due back must go back first, or it is buried under *closed* and nobody ever sends it.
Who
A bill closed owing may be reopened by anyone who may void, to collect — that has been so since the recovery route existed. A bill closed settled is reopened only by an account administrator, because reopening a paid bill is the first step of changing what the hotel told the guest it owed.
What the log says
The reopen, each void and the close each carry the login, the user, the address of the machine and the browser, on the booking's history and on Operations → Log. "Who has done what" is answered there with three more fields than a name.