1 in about 20 customers failing verification,

[BirmFizz]

seems to be Barclaycards. Anyone know what may be wrong

[Emma_]

Hi @BirmFizz, sorry to hear that your customers were unable to verify. This is likely to be related to 3D Secure with your custom API. Please make sure you have implemented the 3D Secure to your payment integration. All the information you need and steps to follow to implement SCA (Strong Customer Authentication) is outlined here. 

[BirmFizz]

Thank you for your response. The link you shared is of web payment SDK . I am using square payment form with SCA required verification. The cards facing the mentioned issue are returning token in success response without any error but at the time of charge they are giving error. It is not happening with all cards but recently number of customers are facing this issue.  Below is the code implemented as per Square instructions for buyer verification. Please look into this at earliest and advise why all the sudden it has started to happen ? and how to sort this with Square payment form.

sqPaymentForm.verifyBuyer(
 nonce,
 verificationDetails,
 function(err,verification) {
if (err == null) {
document.getElementById('veriToken').value = verification.token;
nonceField.value = nonce;
// alert("Veri"+verification.token);
 
} else {
 alert("Failed to verify buyer" + err.type + ":" + err.message);
 console.log("Buyer verification failed: " + err.type + ": " + err.message);
 return false;
}
});

[Emma_]

Thank you @BirmFizz for the details. 3D Secure is the new EEA regulation. Online payment processed through Square Online is automatically updated. However, all the custom APIs need to be updated with VerifyBuyer by the sellers. 

From the information you gave me, I understand you are using a custom API. Please contact our support team from the Square developer website. Scroll down to the footer of the page and click Contact Support. Our team will need to have a look at the specific payment form and will help you with this matter. 

[BirmFizz]

There is no - 'Contact Support' at footer of the page?? Only contact Sales.

[BirmFizz]

Sorry, there is ... went blind for a second 😛