Scheduling conflicts message displaying on opening MPP file (C# .NET)

Aspose.Tasks Product Family
1

Hi Team,

Scheduling conflicts for task message displaying on opening MPP file.May i know the problem.

Please find the attachment.
Conflict Issue.zip (57.1 KB)

Note: Same issue exist with latest version(20.7) also.

Regards,
Ravi K

2

@ravikonnur,

The above issue is observed on opening the output file. An issue with ID TASKSNET-4266 has been created to further investigate the issue. We will share feedback with you as soon as the issue will be fixed.

3

@ravikonnur,

After investigation of issue it has been observed that issue lies in your implementation. Actually, you have set ActualStart for Task4 and Task5,

( line “task.Set(Tsk.ActualStart, DateTime.Now);”)

Thus, “Start” field for these task was recalculated (the same behavior as in MS Project does).
Thus Task4 and Task5 have start DateTime.Now, where as summary task “SubTask” has Start = DateTimeNow.AddDays(2) which leads to scheduling conflict. I hope the shared elaboration will be helpful. You can modify the dates as per your own requirements.

4

After completing Task1 and Task2 immediately task4 and task5 should start so
task1 and task2 finished the task by below line:
task.Set(Tsk.ActualFinish, DateTime.Now);

for task4 and task5 will be set like below:
task.Set(Tsk.ActualStart, DateTime.Now)

Is summaryTask “subTask” actualStart can be less than Start?
ex:
TASK | START | ACTUAL START
subTask | Wed 08-07-20 14:49 | Wed 06-07-20 14:49

Regards,
Ravi K

5

@ravikonnur,

We will share further feedback with you as soon as it will be shared.

6

@ravikonnur,

ActualStart cannot be less than Start for summary task. But because you have ManualMode, Start for summary task is not recalculated. So you can set ActualStart explicitly:


                if (i > 3)
                {
                    startTime = DateTime.Now.AddDays(2);
                    task.Set(Tsk.Start, startTime);

                    endTime = startTime.AddDays(1);
                    task.Set(Tsk.Finish, endTime);

                    task.Set(Tsk.Name, "Task" + i);
                    task.Set(Tsk.OutlineLevel, 3);
                    project.SetBaseline(BaselineType.Baseline, new Aspose.Tasks.Task[] { task });
                    task.Set(Tsk.ActualStart, DateTime.Now.AddDays(2));

                    task.ParentTask.Set(Tsk.ActualStart, startTime);
                    //task.Set(Tsk.ActualFinish, DateTime.Now);
                }
7

After setting the constraint date and type conflict issue is not coming. Can i continue with this
or will it affect any other functionality.

setting constraint date and type like below:

          task.Set(Tsk.ActualStart, startTime);

          task.Set(Tsk.ConstraintDate, startTime);
          task.Set(Tsk.ConstraintType, ConstraintType.AsSoonAsPossible);
8

@ravikonnur,

If this work for you without any issue then its fine. We have shared the root cause of the issue and possible option with you in previous response.