how to put lock on an development object .
I have one doubt, any body can please help me. the scenario is :
if i done some modification in a customizing object and transport it to test system and after me some one else has done some modification on that object and he completed testing before me and apply that in the production system . if after this i will put my modification in the production than it will over write the privious oject.
now tell me how can we prevent such scenario to occur. can we do some setting to stop such over writing ?