You are unable to edit the duration of a Project Task.
Reproducing the Issue
- Go to Project Management work center.
- Choose Projects view.
- Search and find the Project XYZ.
- Choose Edit, then Project Plan.
- Search Project Task XYZ -1.
- You can see the duration is not editable.
The duration of the project task is not editable when at least one of the following cases is true:
- The project task has sub-tasks below it.
- The project task contains a milestone.
- The project task's start constraint type is maintained as Must Start On and the finish constraint type is maintained as Must End On.
System works as designed.
KBA , AP-SLO , Sales Order Processing , How To