If the onAuthorize() callback is not being called when using PayPal Checkout.js, there are a few potential reasons and troubleshooting steps you can take to identify and resolve the issue:

  1. Verify correct integration: Ensure that you have correctly integrated the PayPal Checkout.js library into your application. Double-check the script inclusion and initialization code to make sure it's set up properly.

  2. Check for errors or warnings: Use your browser's developer console to check for any errors or warnings related to the PayPal Checkout.js library. This can provide valuable information about any issues that may be preventing the onAuthorize() callback from being called.

  3. Confirm valid client ID: Make sure you have provided a valid client ID for the PayPal API integration. Check that the client ID is accurate and matches the credentials for your PayPal account.

  4. Verify sandbox or live environment: Depending on your setup, ensure that you are using the appropriate environment (sandbox or live) and corresponding client ID. If you are testing in a sandbox environment, make sure your PayPal account is properly configured for testing.

  5. Check for network issues: Ensure that your application can communicate with the PayPal servers. Check for any network issues that may be preventing the necessary requests from being sent or received.

  6. Verify correct button configuration: Check that the PayPal button is configured correctly and placed within the appropriate HTML element in your page. Confirm that the onAuthorize() callback is assigned to the button's click event or any other relevant event.

  7. Review PayPal developer documentation: Consult the official PayPal developer documentation and guides for Checkout.js. Ensure that you follow the recommended implementation practices and guidelines provided by PayPal.

  8. Test in different environments: Try testing your PayPal integration in different browsers, devices, or network environments to see if the issue is specific to a particular setup. This can help identify any compatibility or environment-specific issues.

  9. Contact PayPal support: If you have exhausted all troubleshooting steps and the issue persists, consider reaching out to PayPal's technical support for further assistance. They can provide insights and guidance specific to your integration.

By following these steps, you should be able to identify and resolve the issue preventing the onAuthorize() callback from being called in PayPal Checkout.js.

Have questions or queries?
Get in Touch