Leaderboard not found in unity

Question

I am trying to implementing itunes Game Center in my unity game but facing error Leaderboard not found searching from hours but haven't find any solution. following is code snippet i am using.

Social.ReportScore(Scores, leaderboardID, (bool successful) =>
            {
                if (successful) Debug.Log("Successfully uploaded");
                else Debug.Log("Failed to uploaded");
            });

Update

i have debug Social.localUser it showed 1000 - Lerpz - False - Offline. i am using Unity 5.5.2f1 on windows 10.