When the system refuses

The rate comes from somewhere you cannot type over

A contract or a channel set this price. That is the system protecting an agreement.

The price on this booking was not set at the desk and cannot be changed at the desk.

A rate contract — a company or agent with a negotiated rate. Typing over it would bill the company something they did not agree to, and the invoice would not match their contract.
A channel — the booking arrived from an OTA at the price it was sold. Changing it here puts the hotel and the channel out of step, and the guest holds a confirmation with the other number on it.

What can be done:

Post a charge or an allowance on the folio if the amount genuinely needs adjusting — visible, with a reason, rather than a silently different rate.
Change the contract if the negotiated rate is out of date. That is an administrator's job and it applies going forward.
"nightly rate must be ..." is a different thing: the number typed is not a valid amount. Whole rupees, more than nothing.

Three more sentences

"Guest has checked out — only an administrator may change the rate now." The bill is issued; changing the rate is a credit or debit note, which is an administrator's.
"The rate on an OTA booking comes from Go-MMT, and cannot be changed in the PMS." The channel charged the guest. A room *move* does not trigger this; a re-price does.
"Every night of this stay has already been billed." Nothing is left for a new rate to apply to — correct the bill.

Before check-out, anybody at the desk may change the rate on a booking the hotel took itself — see Changing the rate on a booking.

More in When the system refuses

It refused. Start here.How to read a refusal, and the three kinds this system gives. That room is already occupied for those datesSomebody else is in it for at least one night of the range. There is no override. The folio carries an outstanding balanceMoney is owed at check-out. The settle window is where it is collected, discounted, waived or left on account. This guest is already booked here for these datesA live booking for the same name or phone overlaps these nights. Find it — it is usually the channel booking you could not see. An administrator may book anyway. The room is vacant-dirtyHousekeeping has not released it. A manager may override, and housekeeping is told. Cannot amend: minimum stay, maximum stay, closed, stop sellThe dates you asked for hit a restriction on the rate plan. A manager may override. Cannot move, and the administrator overrideRoom moves refuse for four reasons. Two can be overridden and two cannot. That room is blocked for those nightsSomebody blocked the room from the chart. The refusal says the dates, the purpose and who. Open the block or pick another room. A reason is requiredCancellations, voids, comps, overrides and moves all need one, and it comes from a list. Day end will not close the dayEither the day has not happened yet, or a shift is still open. That module is not part of this subscriptionThe hotel group does not hold that module. Only Asar can switch one on. That link is not liveOne sentence for three cases: unknown, already used, and lapsed. Wrong hotel code, username or passwordOne sentence for all three, and the one people actually get wrong is the hotel code. The guest owes more than the desk may waive"The guest owes ₹1,240, which is more than the ₹500 this hotel lets the desk waive at check-out." Collect it, discount it, or a manager waives it. The Aadhaar or PAN is not validA format check at the desk, not a lookup against any government service. It needs a company or an agent firstA booking billed to somebody else needs that somebody on file. The dish, category or outlet will not saveEvery one of these is a field the form needs and does not have. The night audit has not been run, so the hotel is still on that date"… would be checked in on a day that is already over. Close the day first." Close the day, then check in. Late check-out charge due — post it or waive it, then check out"Late check-out charge due: left at 14:30, 3½ hours after check-out time 11:00 (50 per cent of 4,200). Post the charge to the folio, or have a manager waive it, then check out." A discount of 15 per cent needs a manager"A discount of 15 per cent needs a manager; this hotel lets the desk give 10 per cent without one." Pick a manager under Approved by, or stay within the limit. The close checklist is not finished"The close checklist is not finished — every day audited (pending)." A month locks only when its mandatory tasks are done; it reopens only with an approved request once the account has the rule. The person who asked for this cannot sign it"The person who asked for this cannot sign it." · "You have already signed this." · "This needs a manager or higher to sign." An approval needs a different person, once, of the right role.