Unable to start annotation

I am using below code to start annotation using Zoom Meeting SDK for Windows.
string monitorId1 = Screen.PrimaryScreen.DeviceName.ToString();
SDKError sDKErrorShScreen = ZOOM_SDK_DOTNET_WRAP.CZoomSDKeDotNetWrap.Instance.GetMeetingServiceWrap().GetMeetingShareController().StartMonitorShare(monitorId1);
SDKError sDKErrorStAn= ZOOM_SDK_DOTNET_WRAP.CZoomSDKeDotNetWrap.Instance.GetMeetingServiceWrap().GetAnnotationController().StartAnnotation(SDKViewType.SDK_FIRST_VIEW);

StartMonitorShare returns SDKERR_SUCCESS.
StartAnnotation returns 15.
Please provide the solution.