What Is Mercado Pago QR-Based Payments?
Mercado Pago QR-Based Payments lets KAST users with access to ARS payments in Argentina pay supported Mercado Pago merchants by scanning a QR code and paying in Argentine pesos (ARS).
You can use Scan to Pay to scan the merchant’s QR code, review the payment details, and confirm the payment in the KAST app.
Who Can Use ARS QR-Based Payments?
This feature is available only in the Argentina region and only to users who have access to ARS payments in KAST.
If you do not see Scan to Pay or ARS payment options in your app, the feature may not be available for your account, region, or app version yet. Make sure your app is updated, or contact Concierge for help.
Where to Find Scan to Pay
You may be able to access Scan to Pay from:
- The Home screen
- The Pay screen
- The ARS Payment flow
When you choose ARS Payment, you may see two options:
- Scan to Pay
- CBU/CVU
ARS QR-based payments do not replace CBU/CVU payments. If CBU/CVU is available to you, you can continue using it.
How ARS QR-Based Payments Work
- Open Scan to Pay in the KAST app.
- Allow camera access if prompted.
- Scan the merchant’s Mercado Pago QR code.
- Review the merchant name, ARS amount, and funding source.
- Confirm the payment only if everything looks correct.
- KAST processes the payment through the existing ARS payment flow.
- You’ll see a success or failure screen once the payment is complete.
Static and Dynamic QR Codes
Mercado Pago QR codes can work in different ways:
- Static QR codes may not include a fixed amount. If the amount is not included, you may need to enter it before confirming.
- Dynamic QR codes may already include the payment amount. If the amount is included, KAST will show it for you to review before confirming.
If the amount looks wrong, do not confirm the payment.
Before You Confirm
Always check:
- Merchant name
- Amount in ARS
- Funding source
Only confirm the payment if all details look correct.
If the Payment Is Successful
If the payment is successful, you’ll see a success screen in the app. You may also receive the usual KAST payment notifications, depending on your notification settings.
If the Payment Fails
If the payment fails, KAST will show a failure screen. This can happen if:
- The QR code cannot be read
- The QR code is not supported
- The payment amount is missing or invalid
- There are not enough funds available
- The merchant details cannot be confirmed
- The payment cannot be processed at that time
You can try again, use another available payment method, or contact Concierge if the issue continues.
Frequently Asked Questions
Why Don’t I See Scan to Pay in My KAST App?
Scan to Pay is available only to eligible users with access to ARS payments in Argentina.
Make sure you’re using the latest version of the KAST app. If you have access to ARS payments but still don’t see Scan to Pay, contact KAST Concierge.
Why Can’t I Scan the Merchant’s Mercado Pago QR Code?
Make sure:
- KAST has permission to access your camera.
- The full QR code is visible.
- Your camera lens is clear and there’s enough light.
- The merchant is showing a supported Mercado Pago QR code.
If the QR code still can’t be scanned, ask the merchant to display it again or use another available payment method.
Why Does KAST Say the Mercado Pago QR Code Is Unsupported?
Not every QR code or merchant setup may be supported.
If KAST can’t process the QR code, don’t continue with the payment. You can use another available payment method, such as CBU/CVU where available, or contact KAST Concierge if you need help.
Why Do I Need to Enter the Payment Amount Myself?
Some Mercado Pago QR codes are static, which means the payment amount isn’t included in the QR code.
In this case, enter the amount in ARS and check it carefully before confirming your payment.
Why Is the Payment Amount Already Filled In?
Some Mercado Pago QR codes are dynamic and already contain the payment amount.
KAST will show the amount in ARS before you confirm. If the amount doesn’t match what you expect to pay, don’t confirm the transaction.
Can I Change the Amount Shown After Scanning a QR Code?
If the merchant’s QR code includes a fixed payment amount, you may not be able to change it.
If the amount is incorrect, don’t confirm the payment. Ask the merchant to check the QR code or use another available payment method.
What Should I Do if the Merchant Name or Payment Amount Looks Wrong?
Don’t confirm the payment.
Ask the merchant to check their QR code and make sure you’re paying the correct merchant and amount. You can also use another available payment method.
Why Did My Mercado Pago QR Payment Fail?
A payment may fail if:
- The QR code isn’t supported.
- The QR code can’t be read.
- The payment amount is missing or invalid.
- You don’t have enough available funds.
- The merchant details can’t be confirmed.
- The payment can’t be processed at that time.
You can try again or use another available payment method. If the issue continues, contact KAST Concierge.
Was I Charged if My Mercado Pago QR Payment Failed?
Check your KAST transaction history to confirm the payment status.
If you’re unsure whether funds were deducted, contact KAST Concierge with the payment details so we can help review the transaction.
I Confirmed the Payment, but the Merchant Says They Haven’t Received It. What Should I Do?
First, check the payment status in your KAST transaction history.
If the payment shows as successful but the merchant says they haven’t received it, contact KAST Concierge with the merchant name, payment amount, date and time, and any available screenshots or transaction details.
Can I Cancel a Mercado Pago QR Payment After Confirming It?
Once you confirm the payment, it may begin processing immediately and cancellation may not be possible.
If you confirmed a payment by mistake, contact KAST Concierge as soon as possible.
What Should I Do if I Paid the Wrong Merchant?
Contact KAST Concierge as soon as possible.
Share the payment amount, date and time, merchant name, and any available transaction details or screenshots so we can review what happened.
Can I Use My USD or Stablecoin Balance to Pay a Mercado Pago QR Code?
The merchant payment is made in ARS. Your available funding source and payment details will be shown in the KAST app before you confirm the transaction.
Always review the payment details before confirming.
Can I Use Mercado Pago QR Payments Outside Argentina?
No. Mercado Pago QR-based payments are available only in the Argentina region for eligible users with access to ARS payments.
Can I Use a Screenshot of a Mercado Pago QR Code?
The feature is designed to scan Mercado Pago QR codes using your device’s camera.
If your KAST app only provides the camera scanner, you’ll need to scan the QR code directly rather than upload an image.
Can I Still Use CBU/CVU Instead of Scan to Pay?
Yes. Scan to Pay doesn’t replace CBU/CVU payments.
If CBU/CVU payments are available for your account, you can continue using them.
Are There Any Fees for Mercado Pago QR Payments?
Any applicable fees or rates will be shown in the KAST app before you confirm the payment.
Review the full payment details before approving the transaction.
What Information Should I Send KAST Concierge if My QR Payment Isn’t Working?
To help us review the issue, please provide:
- The payment amount in ARS
- The date and time of the payment or attempt
- The merchant name, if shown
- A screenshot of any error message, if available
- Whether the payment appears in your KAST transaction history
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