diff --git a/ajax/logFrontendError.php b/ajax/logFrontendError.php
deleted file mode 100644
index d8eb035bb057fd7e4a86dceb108169a8c7b750dd..0000000000000000000000000000000000000000
--- a/ajax/logFrontendError.php
+++ /dev/null
@@ -1,46 +0,0 @@
-<?php
-
-use QUI\ERP\Payments\Amazon\AmazonPayException;
-use QUI\Utils\Security\Orthos;
-
-/**
- * Log errors that occurred in the frontend
- *
- * List of possible frontend errors:
- * https://pay.amazon.com/de/developer/documentation/lpwa/201954960 [02.03.2018]
- *
- * @param string $errorCode
- * @param string $errorMsg
- * @throws AmazonPayException
- */
-QUI::$Ajax->registerFunction(
-    'package_quiqqer_payment-amazon_ajax_logFrontendError',
-    function ($errorCode, $errorMsg) {
-        $errorCode = Orthos::clear($errorCode);
-        $errorMsg  = Orthos::clear($errorMsg);
-
-        switch ($errorCode) {
-            // error code whitelist to avoid spam
-            case 'AddressNotModifiable':
-            case 'BuyerNotAssociated':
-            case 'BuyerSessionExpired':
-            case 'InvalidAccountStatus':
-            case 'InvalidOrderReferenceId':
-            case 'InvalidParameterValue':
-            case 'InvalidSellerId':
-            case 'MissingParameter':
-            case 'PaymentMethodNotModifiable':
-            case 'ReleaseEnvironmentMismatch':
-            case 'StaleOrderReference':
-            case 'UnknownError':
-                QUI\System\Log::addError(
-                    'Amazon Pay - Frontend error :: There was a problem with your Amazon Pay Frontend.'
-                    . ' The payment process could not be used correctly. Please check your Amazon Pay'
-                    . ' settings and/or test your environment in sandbox mode.'
-                    . ' -> Error Code: "' . $errorCode . '" | Error Message: "' . $errorMsg . '"'
-                );
-                break;
-        }
-    },
-    array('errorCode', 'errorMsg')
-);