Following error come when enter particular information:-

$merchantAuthentication->setName("73ePUg6j");
$merchantAuthentication->setTransactionKey("***Q");

$response = $controller->executeWithApiResponse( \net\authorize\api\constants\ANetEnvironment::SANDBOX);

 Output come:-

 [code:net\authorize\api\contract\v1\MessagesType\MessageAType:private] => E00007
                            [text:net\authorize\api\contract\v1\MessagesType\MessageAType:private] => User authentication failed due to invalid authentication values.

when i use

$response = $controller->executeWithApiResponse( \net\authorize\api\constants\ANetEnvironment::PRODUCTION);

 I get output:-

        [errorCode:net\authorize\api\contract\v1\TransactionResponseType\ErrorsAType\ErrorAType:private] => 34
                            [errorText:net\authorize\api\contract\v1\TransactionResponseType\ErrorsAType\ErrorAType:private] => The VITAL identification numbers are incorrect. Call Merchant Service Provider.

But when i tested my account with my key it sucesffuly charge credit card .please help me to resolve this problem.