Unable to edit task dates, duration, or gantt bar in OWB if task assignments have ETC

Document ID : KB000005404
Last Modified Date : 14/02/2018
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Issue:

If a task that is not Fixed Duration has ETC, you are unable to edit the dates or duration in Open Workbench (OWB).

Steps to Reproduce:

1. In OWB, create a new project 
2. Create a task, Task 1 (not Fixed Duration, with dates of 5/31/16 -5/3116) 

3. Assign a resource to Task 1 
4. Set the Loading Pattern to either Uniform or Contour 
5. If not already, change the ETC for the resource to 0 hours 
6. Change the task finish date to 6/2/16 either by manually changing the date, changing the task duration to 3 days, or moving the right end of the Gantt bar to this date

7. Now add 10 hours of ETC to the resource assignment from Step 3 

8. Attempt to change the task finish date to end one day later (6/3/16) either by manually changing the date, changing the task duration to 3 days, or moving the right end of the Gantt bar to this date 

Expected Result: The Finish date remains at the new entered date of 6/3/16. The Duration value remains at the new entered date of 4 days. The gantt scroll bar remains at the new end date of 6/3/16. 

Actual Result: The Finish date reverts back to the previous date. The Duration value reverts back to the previous value. The gantt bar reverts back to its previous length. 

Environment:
This applies to Open Workbench (OWB) for CA PPM 14.3 patch 2 and higher.
Cause:

This is caused by CLRT-77207

Resolution:

This is working as designed. OWB does not allow Task Start dates or Finish dates to extend beyond it's assignment's Start of Finish dates unless it's a Fixed Duration task. It was mistakenly allowed for a while in previous versions as a side effect of fixing a different defect back in 13.0. However, this was reverted back to the intended behavior when the following defect: CLRT-77207 was fixed in 14.3.0.2. (This does differ from the behavior in PPM, which is expected) 

Workaround for this behavior: Change tasks to Fixed Duration 

Additional Information:

Reference TEC1696455 : PPM 14.3 Generic Patch available to resolve reported issues

Reference TEC1773667 : OWB Auto-schedule ignores Resource Availability when using priorities (Details on defect referenced above (CLRT-77207)

Reference TEC1942936 : When a project is saved back from OWB, the task dates change if the Assignment dates do not cover the entire duration of the task