Canara Bank customers may sometimes face a problem where the ATM does not generate the dynamic QR code for UPI-based or cardless cash withdrawal. This can be confusing because the customer may enter the amount, choose the correct option, and wait for the QR code, but the screen may remain stuck, show an error, return to the home screen, or say that the service is unavailable.
In UPI ATM cash withdrawal, the customer normally selects the UPI cash withdrawal option at the ATM, enters the withdrawal amount, and then the ATM displays a single-use dynamic QR code. The customer scans that QR through a UPI app and authorises the transaction with the UPI PIN. After successful authorisation, cash is dispensed. NPCI describes this as a single-use signed dynamic QR flow for UPI cash withdrawal at ATMs.

What Is a Dynamic QR Code at an ATM?
A dynamic QR code is different from a normal static QR code. A static QR code usually remains the same every time, but a dynamic QR code is generated fresh for a particular transaction. In ATM cash withdrawal, the QR code is created only after the customer enters the amount.
This QR code is linked to that specific transaction. Once scanned and authorised, it cannot be reused. This makes the process safer than a fixed QR code because the amount and transaction request are generated for that particular withdrawal.
Why the Dynamic QR Code May Not Generate
There can be several reasons behind this issue. Sometimes the ATM itself may not support UPI QR-based cash withdrawal. Even if the bank supports cardless or UPI-related services, every ATM machine may not have the same software update.
Another common reason is a temporary server problem. The ATM needs to connect with the bank and payment network to generate a valid QR. If the server is slow, under maintenance, or facing network downtime, the QR may not appear.
The issue can also happen due to a weak ATM network connection, cash unavailability, ATM software error, daily transaction limit, wrong option selection, UPI service downtime, or a temporary block on the account.
Check Whether the ATM Supports UPI QR Cash Withdrawal
First, check whether the ATM actually shows a proper “UPI Cash Withdrawal,” “Cardless Cash Withdrawal,” or similar option. If the machine does not show this option, it may not support dynamic QR withdrawal.
Do not assume that every Canara Bank ATM will generate a QR code. Some ATMs may support regular debit card withdrawal only. Some may support cardless withdrawal through mobile banking but not UPI QR withdrawal. The availability can depend on ATM software, bank rollout, and network support.
Canara Bank’s mobile banking page lists services such as cardless cash withdrawal and Scan & Pay through Bharat QR/mobile banking features, but the actual ATM QR flow may depend on the particular ATM and service availability.
Use the Correct Option on the ATM Screen
Many users select the wrong menu and then think the QR is not generating. At the ATM, choose the option related to UPI cash withdrawal or cardless cash withdrawal. After that, enter the withdrawal amount carefully.
If the ATM asks for a mobile number, reference number, OTP, or other details instead of showing a QR, it may be using a different cardless withdrawal method. In that case, follow the exact instruction shown on the ATM and in the bank’s mobile banking app.
Check the Withdrawal Amount
If the entered amount is not allowed, the QR code may fail to generate. Try a smaller amount. Also make sure the amount is in the denomination supported by the ATM.
For example, if the ATM has only ₹500 notes, entering an amount like ₹700 may create a problem. Try a round amount such as ₹500, ₹1,000, ₹2,000, or ₹5,000 depending on your requirement and ATM cash availability.
Also check your account balance and transaction limit. If the amount is above your daily limit or available balance, the ATM may reject the request before generating the QR.
Check ATM Cash Availability
Sometimes the QR code does not generate because the ATM has no cash or does not have the required note denomination. The machine may not always clearly say “cash not available.” It may simply show transaction failed or service unavailable.
If the ATM looks inactive, has frequent errors, or other customers are also unable to withdraw cash, try another nearby ATM. You can also use Canara Bank’s branch or ATM locator from the official website if needed.
Restart the Process Once
If the ATM screen freezes or the QR does not appear, cancel the transaction and wait for the screen to return to the main menu. Then try once more from the beginning.
Do not press buttons repeatedly. Do not start multiple withdrawal attempts quickly. This may create duplicate pending requests or confusion. If the QR does not appear after one or two attempts, it is better to stop and try another ATM.
Check Your Mobile Banking or UPI App
If the ATM generates the QR but your phone cannot scan it, the problem may be with your mobile app or camera. But if the QR itself is not appearing on the ATM screen, the issue is more likely from the ATM side, bank server, payment network, or service availability.
Still, keep your UPI app ready. Your mobile should have internet, the UPI app should be working, and your UPI PIN should be active. Canara Bank’s UPI service allows QR scanning and UPI payments through its digital banking platform.
Update Canara ai1 App
If you are using Canara Bank’s mobile banking service for cardless withdrawal, update the Canara ai1 app to the latest version. Old app versions can create problems in generating cardless withdrawal requests, viewing pending requests, or completing authentication.
Canara ai1 is Canara Bank’s mobile banking app and includes multiple banking services, including fund transfer and digital banking features.
Check Internet and SMS Access
For app-based cardless withdrawal, your mobile internet should work properly. If OTP, SMS verification, or app authentication is required, your registered mobile number should be active.
Make sure your SIM has network, your phone is not in flight mode, and SMS permissions are not blocked. If your mobile banking app is unable to verify the request, the ATM process may not complete.
Try Another ATM
If the same ATM is not generating the QR, try another Canara Bank ATM or another ATM that clearly supports UPI cash withdrawal. The problem may be with that specific machine.
ATM machines can face local problems such as software freeze, network failure, cash cassette issue, QR display error, or temporary service disablement. Trying another ATM is often the fastest solution.
Wait If There Is Bank or UPI Downtime
Sometimes the issue is not from your side. Bank servers, ATM switch, UPI network, or NPCI systems may face temporary downtime. During such periods, QR generation may fail even if your account and app are working.
Wait for some time and try again later. If your cash requirement is urgent, use normal debit card withdrawal, visit a branch, or use another available banking channel.
What If Amount Is Debited but Cash Is Not Received?
This is a different and more serious issue. If money is debited from your account but cash is not dispensed, do not leave the matter casually. Note the ATM location, date, time, amount, and transaction reference number if available.
Raise a complaint immediately through Canara Bank customer care, mobile banking, internet banking, branch, or official complaint portal. Canara Bank lists 1800 1030 as a 24×7 toll-free customer care number and also provides an online grievance registration system.
Do Not Scan Unknown QR Codes Near ATMs
Only scan the QR code shown on the official ATM screen. Do not scan any QR sticker pasted near the ATM, on the wall, on the cash machine, or shared by a stranger.
Fraudsters may paste fake QR codes near ATMs or guide customers to scan a wrong code. For ATM cash withdrawal, the QR should appear on the ATM display itself during the transaction. Never scan a random QR code for cash withdrawal.
Do Not Share UPI PIN or OTP
Your UPI PIN is used to authorise payment or withdrawal. Never share it with anyone. Bank employees, ATM guards, customer care agents, or strangers should not ask for your UPI PIN, ATM PIN, OTP, mobile banking password, or debit card details.
If someone offers to “help” you generate the QR code and asks for your phone, PIN, or OTP, refuse immediately. Complete the process yourself or contact official bank support.
When to Contact Canara Bank
Contact Canara Bank if the QR code is not generating at multiple ATMs, the same error continues for several days, your account is debited without cash withdrawal, your mobile banking request is stuck, or the ATM shows repeated technical failure.
Use only official support channels. Canara Bank provides customer care through 1800 1030, complaint registration, and branch support. For ATM-related failed transactions, keep the transaction details ready before raising the complaint.
FAQs
Q1. Why is Canara Bank ATM dynamic QR code not generating?
A: It may happen due to ATM network failure, unsupported ATM machine, server downtime, wrong menu selection, cash unavailability, daily limit issue, or temporary UPI service problem.
Q2. Does every Canara Bank ATM support dynamic QR cash withdrawal?
A: Not necessarily. Some ATMs may support only debit card withdrawal, while some may support cardless or UPI-based withdrawal. The option depends on the ATM and service availability.
Q3. What should I do first if the QR code does not appear?
A: Cancel the transaction, wait for the ATM to return to the home screen, and try once again. If it still fails, use another ATM or try later.
Q4. Can the QR fail because of low balance?
A: Yes. If your account balance is low or the amount exceeds your allowed limit, the request may fail before the QR code is generated.
Q5. Can I use any UPI app to scan the ATM QR code?
A: For UPI cash withdrawal, NPCI describes the process as scanning the ATM QR using a UPI app and authorising with UPI PIN. However, actual app support may depend on the bank, UPI app, and ATM service availability.
Q6. What if the QR appears but my phone cannot scan it?
A: Clean your phone camera, increase screen brightness if possible, hold the phone steady, and make sure your UPI app has camera permission. If the ATM screen is damaged or blurred, try another ATM.
Q7. What if money is debited but cash is not dispensed?
A: Raise a complaint immediately with Canara Bank through customer care, mobile banking, branch, or online grievance portal. Keep the ATM location, time, amount, and reference number ready.
Q8. Is it safe to scan a QR code at an ATM?
A: Yes, but only scan the QR code displayed on the official ATM screen during your transaction. Never scan pasted QR stickers or QR codes shown by unknown people near the ATM.