In the environments section the Username, Password, Account ID can be configured. These details are provided by Transsmart. To be able to book shipments to the carrier, this environment must be 'live'. We advise you to always start in a test environment first. Your Magento partner can set this up for you. You also start in a test environment for Transsmart. You do this by selecting 'staging'. Shipments are not yet sent to the carrier.
If you don’t have a test environment, please contact Transsmart via firstname.lastname@example.org .
After the first configuration is done click on ‘save config’ on the top right to save the settings from the environment.