Like the Transport Management System, Transport Expresso has the concept of a Domain Controller.
The domain controller does not need to be configured in any special way, it is simply the SAP system that the Transport Expresso client software connects to, and is where Transport Expresso configuration and application data is stored.
The server software runs mostly within the Transport Expresso domain controller. When necessary, the domain controller connects to the other SAP systems to gather transport request information and to perform transports. These connections are made using SAP’s remote function call (RFC) protocol.
It is recommended that a Solution Manager system be selected as the Transport Expresso domain controller. Please note however that there is no requirement for the Transport Expresso domain controller and TMS domain controller to be the same SAP system. In fact, a single Transport Expresso domain controller can manage transports for multiple TMS domains.
Note: All Transport Expresso users will require a user account in the domain controller system with a valid email address in order to receive email notifications. Each user must also be assigned with role /BTI/TE:CTS_USER to allow access to the relevant TE functions.