Go to T-Code STMS
It will ask to configure Transport Domain Just save it with default settings
After saving the default setting the system will look like this
Now go to Systems
Overview >> Systems
It will show u all the system in this domain controller by default there is only one system in domain controller and that is DEV now u have to create PRD and QAC
Now Go to SAP System >> Create >> Virtual System
It will ask to create system type give it the name PRD and now replete the same for the QAC
Now your domain controller has all three systems..
Now u have to configure the Transport route
So for this go to /nSTMS and then go to
Overview >> Transport Route
In this transport route configuration window.
Configuration >> Standard Configuration >> Three system in Group
It will ask u to give the DEV QAC and PRD system just select them
You’re your STMS is Configured and it will look like this