Hi,
I dont have MSSQL server with me.but i can help you find the MTE.
If the database is SQL you can go to database thread that you see.
Or
Go in Rz21 try to select Properties assigned to MTE classes and Display overview and find "exts"
That Should be the MTE.
Let me know the value of it.
If still you don't get it please let me know.
Thanks
Rishi Abrol