Square WebPay support thread.

[jeking]

I have purchased it also for clients many times and never an issue. The money for the plugin is very small vs the massive hours it takes to analyze an API and build integration. Carl is a hero!

Custom payment modules are expensive and time consuming. We've built them for clients, as others here have as well.

Having @carlwhat build, maintain and support this module is a huge benefit to the Zen Cart community and all those business owners using this module. Thanks Carl!!

[DML73]

I was wondering how it would be possible to remove the "Credit Card" radio button and text? It's a bit confusing with two credit card buttons.

[royaldave]

I was wondering how it would be possible to remove the "Credit Card" radio button and text? It's a bit confusing with two credit card buttons.

Hi

What payment options do you have installed, because the initial one looks like it comes from a different payment plugin?

If you want to distinguish the two options I'd consider amending your language files to highlight where the payment is going through - ie 'Credit Card through Square', and I have no idea what the other one is.

[DML73]

The first one is the authorizenet module, I use this for credit card processing, and then only use the squarepay module for Apple and Google Pay.

[lat9]

The first one is the authorizenet module, I use this for credit card processing, and then only use the squarepay module for Apple and Google Pay.

You can change the Square Webpay language file's constant:

    define('MODULE_PAYMENT_SQ_WEBPAY_TEXT_CATALOG_TITLE', 'Google Pay/Apple Pay');  // Payment option title as displayed to the customer

[DML73]

Ah yes that will work

[swguy]

If you are using Square as a storeowner and you have a developer working with you, they can have their own account so you don't have to coordinate for two factor authentication checks. It's called creating an Authorized Representative. See https://docs.zen-cart.com/user/payme...representative

[dbltoe]

ZC Version 2.2.2 with PHP 8.5, OPC and WebPay 3.1.2

The ID and Secret are verified and from production vs test. Callback URL established correctly as well.

I cannot verify that the customer is using the correct SDK until tomorrow (I forgot to look when I was in there)

The upgrade was done by first removing the includes/modules/payment/square_webPay folder per instructions.

Purchase attempts are getting " Unable to process payment due to a communications error. You may try again or contact us for assistance."

Log file is:

[04-Jun-2026 00:00:52 UTC] Request URI: /index.php?main_page=checkout_process, IP address: 246.197.16.99, Language id 1
#0 [internal function]: zen_debug_error_handler()
#1 /includes/modules/payment/square_webPay.php(535): trigger_error()
#2 /includes/modules/payment/square_webPay.php(514): square_webPay->logSquareApiException()
#3 /includes/modules/payment/square_webPay.php(469): square_webPay->paymentRequest()
#4 /includes/classes/payment.php(382): square_webPay->before_process()
#5 /includes/modules/checkout_process.php(110): payment->before_process()
#6 /includes/modules/pages/checkout_process/header_php.php(13): require('/home/spicdavi/...')
#7 /index.php(40): require('/home/******/...')
--> PHP Notice: Code: 400-> API request failed
Status code: 400
Body: {"errors": [{"code": "INVALID_CARD_DATA","detail": "Card nonce not found in this application environment. Please ensure an application ID belonging to the same environment is used when generating the nonce.","category": "INVALID_REQUEST_ERROR"}]}
{} in /includes/modules/payment/square_webPay.php on line 535.

[carlwhat]

ZC Version 2.2.2 with PHP 8.5, OPC and WebPay 3.1.2

The ID and Secret are verified and from production vs test. Callback URL established correctly as well.

I cannot verify that the customer is using the correct SDK until tomorrow (I forgot to look when I was in there)

The upgrade was done by first removing the includes/modules/payment/square_webPay folder per instructions.

Purchase attempts are getting " Unable to process payment due to a communications error. You may try again or contact us for assistance."

Log file is:

[04-Jun-2026 00:00:52 UTC] Request URI: /index.php?main_page=checkout_process, IP address: 246.197.16.99, Language id 1
#0 [internal function]: zen_debug_error_handler()
#1 /includes/modules/payment/square_webPay.php(535): trigger_error()
#2 /includes/modules/payment/square_webPay.php(514): square_webPay->logSquareApiException()
#3 /includes/modules/payment/square_webPay.php(469): square_webPay->paymentRequest()
#4 /includes/classes/payment.php(382): square_webPay->before_process()
#5 /includes/modules/checkout_process.php(110): payment->before_process()
#6 /includes/modules/pages/checkout_process/header_php.php(13): require('/home/spicdavi/...')
#7 /index.php(40): require('/home/******/...')
--> PHP Notice: Code: 400-> API request failed
Status code: 400
Body: {"errors": [{"code": "INVALID_CARD_DATA","detail": "Card nonce not found in this application environment. Please ensure an application ID belonging to the same environment is used when generating the nonce.","category": "INVALID_REQUEST_ERROR"}]}
{} in /includes/modules/payment/square_webPay.php on line 535.

there is a mis-configuration going on. specifically between the production and sandbox environments.

i would suggest deleting all of your access tokens, their refresh tokens, and their TTL values. and then ensure that you the correct ID and Secret for the selected environment.

those keys are all something like:

MODULE_PAYMENT_SQ_WEBPAY_ACCESS_TOKEN
MODULE_PAYMENT_SQ_WEBPAY_TOKEN_EXPIRES_AT
MODULE_PAYMENT_SQ_WEBPAY_REFRESH_TOKEN
MODULE_PAYMENT_SQ_WEBPAY_SANDBOX_TOKEN
MODULE_PAYMENT_SQ_WEBPAY_SANDBOX_TOKEN_EXPIRES_AT
MODULE_PAYMENT_SQ_WEBPAY_SANDBOX_REFRESH_TOKEN

you can review this post.

as well as this post.

the first post takes a hammer and reconstructs. the 2nd post takes a dull scalpel and then sews up.... in both cases you will need to get a new oauth token.

hopefully that will help resolve this issue.

best.

[dbltoe]

That was interesting, to say the least. I did, in fact, find the old data in the database.

However, this situation was a bit different, as the business was sold and the current owner was adding their code to the mod. That was in addition to the upgrade from 2.2.0 to 2.2.2 in the midst of everything else.

The SDK was one step newer as well, so I set it correctly.

The only problem now (minor at best) is that orders processed under the previous owner throw an error when viewing details or using Edit Orders due to the company changing hands.

Thanks for pointing me in the right direction. The docs showed no search results for Card nonce not found in this application or any variance of that search string.