Magento 2 - Auth.net Sandbox not working

Question

Using Magento 2.2.4 - I have the Auth.net Direct Post payment method enabled, the Magento Auth.net patch applied, and with the configuration:

Gateway URL:

https://test.authorize.net/gateway/transact.dll

Transaction Details Url:

https://apitest.authorize.net/xml/v1/request.api

I'm seeing the transactions in the Auth.net sandbox payment.log:

(TESTMODE) This transaction has been approved

but an error is being thrown on the Magento side:

Please enter a transaction ID to authorize this payment

I've tried with Test Mode both enabled and disabled. How can I get this working properly?

Answer 1

Normally - Authorize.NET does not return a transaction ID in the test mode

Please update with below file :app/code/Magento/Authorizenet/Model/Directpost.php

if (!$this->getResponse()->getXTransId()) { // approx line number 664

replace with

if (!$this->getResponse()->getXTestRequest() && !$this->getResponse()->getXTransId()) {

I hope its work for you.