I have modified one release strategy for PR.I am also found the release strategy tab in mE51N transation. But at the same time I am getting an error " Pl check the department Code entered in tracking no field" . There is no message no displayed. When I am putting the department code in the tracking no field the release strategy field disappears. Pl tell me where to find this error message . I want to change it to warning message so that my release strategy should work. I am not finding this error in Purchasing.