Microsoft KB Archive/96712

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PRJ: Resource Overallocated on Fixed Task Despite No Overlap

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Q96712

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The information in this article applies to:


 * Microsoft Project for Windows, versions 1.0, 3.0, 3.0a, 4.0
 * Microsoft Project for the Macintosh, versions 1.1, 3.0, 4.0

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SUMMARY
In some cases when a task has a resource assigned outside of the dates for the task, Microsoft Project will display that resource as overallocated (even though none of the tasks using this resource overlap in the area of the overallocation).

MORE INFORMATION
As long as the &quot;Schedule Messages&quot; option in Preferences is set to &quot;Yes&quot;, when a task has a resource assigned outside of the dates for a task, the error message, &quot;Resource is assigned outside of the dates for task (number),&quot; should be displayed for one of the tasks in the area of the overallocation. If the message is not displayed, you will need to look at the tasks in the area to determine which task is causing the overallocation. In either case, the following will be true:


 * The task will have a Fixed duration.
 * The resource will be assigned for more work than can be accomplished in the working days of the task dates. (Working days are based on the project's calendar when using Fixed duration scheduling.)
 * The resource's Scheduled Start or Finish dates will extend beyond the task's Scheduled Start or Finish dates.

Workaround
To work around this problem, remove the Fixed duration attribute (this will allow the task's scheduled dates to match up with the resource's scheduled dates) or reduce the amount of work assigned to the resource.

The following information is an example of the problem described above:

Name   Duration    Fixed    Resource  Resource Work Task1     3d        Yes       Bob         32h Task2     2d        No        Bob         16h NOTE: Task1 and Task2 are linked in a finish-to-start (FS) relationship.

       | M | T | W | T | F |

Task1   +++++++++++ --- (Bob's work on Task1) Task2               +++++++ --- (Bob's work on Task2) Note that even though Task1 and Task2 do not overlap, there is a resource overallocation on the first day of Task2 because Bob is working 32 hours on Task1 and the duration only allocates a fixed 24 hours of work. As a result, Bob is assigned outside of the dates for the task. Changing the Fixed duration to No or reducing Bob's work to 24 hours will resolve the problem.

Additional query words: 3.00a leveling cannot resolve

Keywords : kbusage

Issue type : kbprb

Technology :