Reasons refer to the various items that can be associated with a constraint or plan failure. New project will automatically come pre-populated with common reasons.
However, you can edit and delete reasons by selecting the appropriate icon when hovering over a specific reason. To add a new reason, simply click on the “Add Reason” button, type a reason name, select an icon for the reason, and click “Save”.
Reasons are used whenever Snapshots are taken..
SlatPlanner will ask for a reason whenever a task's finish has been delayed. Users with Edit all Tasks permission or higher can put in these reasons for each delay.
A delay occurs when a task doesn't start on time and when a task doesn't finish on time, or both. The delay isn't recorded until the task finally starts and is late compared to the most recent snapshot, the same thing happens when a task is marked as finished, if it is late compared to the most recent snapshot then it is also considered late.
A task that starts late and keeps the same duration will also be considered to have finished late, assuming no snapshot was taken during the duration of the task. If a snapshot is taken in the middle of the task it will not be considered late assuming it finishes the same day the latest snapshot says it will.