[BUG] Test mode throws an exception error

[Jordaneisenburger]

To Reproduce
Steps to reproduce the behavior:

1. Go to PostNL > Configuration
2. Configure test credentials in Test mode
3. Click on validate API Credentials

Please note that when we work with the Live config it works. But we really need Test mode to work as well.

Expected result
No error and positive feedback

Actual result
We get an error as below:

2 exception(s):
Exception #0 (TIG\PostNL\Webservices\Api\Exception): [] SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl' : failed to load external entity "https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl"

Exception #1 (SoapFault): SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl' : failed to load external entity "https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl"


Exception #0 (TIG\PostNL\Webservices\Api\Exception): [] SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl' : failed to load external entity "https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl"

<pre>#1 TIG\PostNL\Webservices\ExceptionHandler->handle() called at [vendor/tig/postnl-magento2/Webservices/Soap.php:93]
#2 TIG\PostNL\Webservices\Soap->call() called at [vendor/tig/postnl-magento2/Controller/Adminhtml/Config/Validate/ApiCredentials.php:149]
#3 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials->validateApiCredentials() called at [vendor/tig/postnl-magento2/Controller/Adminhtml/Config/Validate/ApiCredentials.php:118]
#4 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials->execute() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#5 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#6 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#7 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callPlugins() called at [generated/code/TIG/PostNL/Controller/Adminhtml/Config/Validate/ApiCredentials/Interceptor.php:23]
#8 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->execute() called at [vendor/magento/framework/App/Action/Action.php:111]
#9 Magento\Framework\App\Action\Action->dispatch() called at [vendor/magento/module-backend/App/AbstractAction.php:151]
#10 Magento\Backend\App\AbstractAction->dispatch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#11 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#12 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/module-backend/App/Action/Plugin/Authentication.php:145]
#13 Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#14 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#15 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callPlugins() called at [generated/code/TIG/PostNL/Controller/Adminhtml/Config/Validate/ApiCredentials/Interceptor.php:32]
#16 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->dispatch() called at [vendor/magento/framework/App/FrontController.php:245]
#17 Magento\Framework\App\FrontController->getActionResponse() called at [vendor/magento/framework/App/FrontController.php:212]
#18 Magento\Framework\App\FrontController->processRequest() called at [vendor/magento/framework/App/FrontController.php:146]
#19 Magento\Framework\App\FrontController->dispatch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#20 Magento\Framework\App\FrontController\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#21 Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#22 Magento\Framework\App\FrontController\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/FrontController/Interceptor.php:23]
#23 Magento\Framework\App\FrontController\Interceptor->dispatch() called at [vendor/magento/framework/App/Http.php:116]
#24 Magento\Framework\App\Http->launch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#25 Magento\Framework\App\Http\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#26 Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/module-application-performance-monitor/Plugin/ApplicationPerformanceMonitor.php:38]
#27 Magento\ApplicationPerformanceMonitor\Plugin\ApplicationPerformanceMonitor->aroundLaunch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#28 Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#29 Magento\Framework\App\Http\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/Http/Interceptor.php:23]
#30 Magento\Framework\App\Http\Interceptor->launch() called at [vendor/magento/framework/App/Bootstrap.php:264]
#31 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:30]
</pre>

Exception #1 (SoapFault): SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl' : failed to load external entity "https://api-sandbox.postnl.nl/shipment/v1_1/barcode/soap.wsdl"

<pre>#1 Laminas\Soap\Client\Common->__construct() called at [vendor/laminas/laminas-soap/src/Client.php:1120]
#2 Laminas\Soap\Client->initSoapClientObject() called at [vendor/laminas/laminas-soap/src/Client.php:1293]
#3 Laminas\Soap\Client->getSoapClient() called at [vendor/laminas/laminas-soap/src/Client.php:1205]
#4 Laminas\Soap\Client->__call() called at [vendor/tig/postnl-magento2/Webservices/Soap.php:91]
#5 TIG\PostNL\Webservices\Soap->call() called at [vendor/tig/postnl-magento2/Controller/Adminhtml/Config/Validate/ApiCredentials.php:149]
#6 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials->validateApiCredentials() called at [vendor/tig/postnl-magento2/Controller/Adminhtml/Config/Validate/ApiCredentials.php:118]
#7 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials->execute() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#8 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#9 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#10 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callPlugins() called at [generated/code/TIG/PostNL/Controller/Adminhtml/Config/Validate/ApiCredentials/Interceptor.php:23]
#11 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->execute() called at [vendor/magento/framework/App/Action/Action.php:111]
#12 Magento\Framework\App\Action\Action->dispatch() called at [vendor/magento/module-backend/App/AbstractAction.php:151]
#13 Magento\Backend\App\AbstractAction->dispatch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#14 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#15 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/module-backend/App/Action/Plugin/Authentication.php:145]
#16 Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#17 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#18 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->___callPlugins() called at [generated/code/TIG/PostNL/Controller/Adminhtml/Config/Validate/ApiCredentials/Interceptor.php:32]
#19 TIG\PostNL\Controller\Adminhtml\Config\Validate\ApiCredentials\Interceptor->dispatch() called at [vendor/magento/framework/App/FrontController.php:245]
#20 Magento\Framework\App\FrontController->getActionResponse() called at [vendor/magento/framework/App/FrontController.php:212]
#21 Magento\Framework\App\FrontController->processRequest() called at [vendor/magento/framework/App/FrontController.php:146]
#22 Magento\Framework\App\FrontController->dispatch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#23 Magento\Framework\App\FrontController\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#24 Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#25 Magento\Framework\App\FrontController\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/FrontController/Interceptor.php:23]
#26 Magento\Framework\App\FrontController\Interceptor->dispatch() called at [vendor/magento/framework/App/Http.php:116]
#27 Magento\Framework\App\Http->launch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#28 Magento\Framework\App\Http\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#29 Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/module-application-performance-monitor/Plugin/ApplicationPerformanceMonitor.php:38]
#30 Magento\ApplicationPerformanceMonitor\Plugin\ApplicationPerformanceMonitor->aroundLaunch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#31 Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#32 Magento\Framework\App\Http\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/Http/Interceptor.php:23]
#33 Magento\Framework\App\Http\Interceptor->launch() called at [vendor/magento/framework/App/Bootstrap.php:264]
#34 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:30]

Workaround
None

Screenshots

** Please complete the following information**

• Magento version: 2.4.8-p2
• PHP version: 8.2.30
• TIG PostNL version: 1.23.0

[JorisPostNL]

Hi @Jordaneisenburger thank you for bringing this to our attention. We attempted to reproduce the issue on our side but were able to validate the test credentials without any problems. Several factors could cause this behaviour, including a possible misconfiguration of your API account in our system.
To investigate this properly, we kindly ask you to raise a ticket with our Tech Support team. You can do so via: https://developer.postnl.nl/support/form/.
Please note that test mode is only strictly required when performing tests that may place significant load on our APIs. For example, when testing a ShippingStatus integration that could generate a high volume of calls. For regular tests, such as creating labels or trying out specific products, using test mode is not necessary. Labels and pre-alerts that are never physically scanned in our network do not incur any fees.
If you are unsure whether your planned tests are safe to run in the live environment, feel free to describe them in a reply to this thread. We will be happy to advise whether using the test environment is recommended.

Kind regards
Joris - PostNL

[Jordaneisenburger]

Hi Joris,

Thanks for the quick response!

I wanted to make sure that during testing it won't incur any fees but like you stated it won't so I will use the Live modus which is working for us.

[JorisPostNL]

Glad to have helped @Jordaneisenburger I should mention that there is one exception which is the international address validation, which could incur a fee in some situations. If you have signed up for this API and have it active in your environment we suggest turning this off for the duration of your tests. The regular (NL) address validation is free to use though.

Kind regards
Joris - PostNL