I solved this problem.Ok.I migrated but no transfer now.Message is showing on screen device version and WinCC flexible version are different.I looked OP77B.It was showing v7.02 and my WinCC flexible is v7.1.1.0.I
Strange problem.I could not understand.I have got two pc.And loaded WinCC flexible alsne of them installed windows xp pro,other has got windows 2000.One of them is migrated.