SO basically, when you are awarded with the scholarship, you can choose to study ANY of German universities, as long as you follow the program/course of Masters you indicated as an intended degree to obtain. By this I mean, if you got acceptance letter from TU Dortmund for your MA degree in Management, but you chose MA in Management in TU Munich, TU Berlin and TU Frankfurt as your 3 desired universities in your application, you still have a right to go to TU Dortmund.
SO the scholarship does not limit you to those 3 universities U indicated in ur application (this is what I heard from regional DAAD Coordinator, btw, I am from Uzbekistan). And finally, CONGRATZ for double achievement! Hope you will decide wisely and, most importantly, choose the one from which you can take the most! All the best!