/home/kueuepay/public_html/vendor/srmklive/paypal/lang/ja/error.php
<?php

return [
    'paypal_transaction_declined'     => 'PayPalでお取引が拒否されたため、支払いを処理できません',
    'paypal_transaction_not_verified' => 'PayPalからの取引を確認できません',
    'paypal_connection_error'         => 'PayPalに接続できません。もう一度お試しください',
];
Error Handling

Error Handling

In case of an error, the API will return an error response containing a specific error code 400, 403 Failed and a user-friendly message. Refer to our API documentation for a comprehensive list of error codes and their descriptions.