The Tenant Code is the unique identifier for the Business Central company and you must individually register each company with the Payment Gateway Service.
The combination of the Tenant Code and Access Key ensures that payment activities are issued against a specific company. Payments cannot be taken on behalf of a different company.
Use the Create Tenant Action to register the current company with the Payment Gateway Service and create your own Tenant Code and Access Key. We recommend making a backup of these values following a successful registration to ensure re-access to the tenant if needed.
If you select the Test Connection Option, located under the Action Menu, you will receive a success information message if everything has been setup correctly as it will confirm if a successful connection can be established for the Payment Gateway Tenant.