Failed to process the payment
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Customers are getting this error on my client’s website.
Failed to process the payment. Please try again or contact the shop admin. [UNPROCESSABLE_ENTITY] The transaction has been refused because the Invoice ID already exists. Please create a new order or reach out to the store owner. https://developer.paypal.com/docs/api/orders/v2/#error-DUPLICATE_INVOICE_ID
Money is getting deducted from users accounts.
Order page in admin backend shows this in notes.
Failed to process the payment. Please try again or contact the shop admin. [UNPROCESSABLE_ENTITY] The transaction has been refused because the Invoice ID already exists. Please create a new order or reach out to the store owner. https://developer.paypal.com/docs/api/orders/v2/#error-DUPLICATE_INVOICE_ID PayPalGateway.php:685 [UNPROCESSABLE_ENTITY] The transaction has been refused because the Invoice ID already exists. Please create a new order or reach out to the store owner. https://developer.paypal.com/docs/api/orders/v2/#error-DUPLICATE_INVOICE_ID OrderEndpoint.php:346 Order status changed from Pending payment to Failed.
I have checked logs, paypal invoices to understand this, but no luck so far.
Requesting to kindly help to resolve this as soon as possible.
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Hello @danejshweta
Thanks for reaching out to us, we’re here to help.The error DUPLICATE_INVOICE_ID error is a security feature from PayPal which aims to prevent accidental double-payments.
PayPal Payments automatically sets an “invoice prefix” and then sends the WooCommerce order numbers in the pattern “invoice prefix+ordernumber” to PayPal.
So when your prefix is set to “cfbdg-” and your order number is “123”, PayPal Payments sends the invoice ID “cfbdg-123” to PayPal.Under certain circumstances, for example when you restore a backup from your website, it is possible that the most recent WooCommerce orders do not exist anymore after the restore.
So as soon as WooCommerce attempts to create a new order with the number 123 and the same invoice prefix, PayPal would throw this error to prevent accidental double payments because there is already a payment at PayPal with the same invoice ID.
This feature can be disabled, though we usually recommend keeping it enabled. To disable it, follow these steps:- Log in to your Business PayPal account (https://www.paypal.com/businessmanage/preferences/payments)
- Go to the?Payments Preferences?section
- Under the “Block accidental payments:” section, select the option “No, allow multiple payments per invoice ID“
With this feature disabled, PayPal would no longer complain when you submit an invoice number that already exists in the system.
But instead of disabling this feature, it would be better to figure out the true cause for this error. A buyer during the normal checkout process should normally not encounter this error.
Kind regards,
Krystian
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