Handle buyer checkout errors

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Last updated: Mar 2nd, 1:37am

Use onError callbacks and alternate checkout pages to handle buyer checkout errors.

Buyer checkout error

If an error prevents buyer checkout, alert the user that an error has occurred with the buttons using the onError callback.

1paypal.Buttons({
2    onError: function(err) {
3        // For example, redirect to a specific error page
4        window.location.href = "/your-error-page-here";
5    }
6}).render('#paypal-button-container');

This error handler is a catch-all. Errors at this point are not expected to be handled beyond showing a generic error message or page.

Script not loading error

If null pointer errors prevent the script from loading, provide a different checkout experience.

1if (window.paypal && window.paypal.Buttons) {
2    // render the buttons
3} else {
4    // show a fallback experience
5}

Know before you code

Standard Checkout

Required
This feature modifies an existing standard Checkout integration and uses the following:

JavaScript SDK: Adds PayPal-supported payment methods

Orders REST API: Create, update, retrieve, authorize, and capture orders.

Read the standard checkout guide

Explore PayPal APIs with Postman

Optional

You can use Postman to explore and test PayPal APIs. Learn more in our Postman guide.

Run in Postman