When the night auditor signs the close, Containn freezes that day's lines. It doesn't keep a reference to be recalculated later: it keeps the numbers.
The reason is simple, and expensive to learn any other way. If tomorrow someone corrects a charge from Tuesday, there are two possible answers to the question “how much did the hotel sell on Tuesday?”. A system that recalculates gives you the new answer and erases the one that was signed; from then on, the sheet the general manager signed and the screen no longer match, and the signature is worthless.
Containn always gives the answer that was signed. The correction shows up on the day it was made, which is where accounting expects it. If you need to see the effect of the correction on Tuesday, it's in the account's subsidiary ledger, dated the day the adjustment was actually made.
An improvement to how today is calculated doesn't change days already signed. When we added the per-tax breakdown, earlier days kept posting tax to the general tax account, because that was the sheet that was signed. That's correct, even if it takes some explaining.
Where you see it
- In Finances → Day close, the Signed days table: each row is a signature, with its frozen totals and the name of the person who signed.
- In the Night Audit Totals report (Totales de Auditoría) for a signed day: the DÍA CERRADO (day closed) stamp with date and time, and a note that the sheet reads exactly as it was signed.
- When you add a charge or a payment, the business date selector (Día de operación), when it appears, never offers a signed day.
- The daily póliza (póliza is the Mexican term for a journal entry) is built from that frozen sheet, not from a fresh calculation.
The signing rules
- Only a day that has ended can be signed, and days are signed in order. The first one is the anchor: everything before it stays as unsigned history.
- Reopening a signed day is a special permission, requires a reason and is counted. The screen reopens the most recent signed day. When it's signed again, the sheet is frozen with whatever it holds at that moment, but the póliza already created from that day is not rebuilt (see Why a póliza is never edited).
When its day is already signed, a night's room revenue and the charges posted every night are corrected with an offsetting line on the day the correction is made. A folio charge or a payment that is edited or deleted after its day was signed changes the folio but leaves no offsetting line: the difference never reaches any day's póliza. If you correct one of these, tell your accountant so they can record it with a manual póliza.