Test Environment
You can set your payment environment in test by setting the ‘environment’ field to ‘Sandbox’. Check if you have a TPE ready for the tests (you can do that in your Monetico account dashboard).
All the payment proceed on your Magento are redirected to the testing TPE.
For further information for how to set and configure the test environment in your Monetico account, visit the official Monetico documentation:
https://www.monetico-paiement.fr/fr/piloter-suivre/parametrage/environnement-de-test.html