Microsoft KB Archive/113308

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Resource Overallocated When Peak Units Value Equals Max

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Q113308

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The information in this article applies to:


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

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SYMPTOMS
In Microsoft Project, when you assign a resource part-time to multiple tasks, the resource may be overallocated even if the Peak Units value for the resource is equal to the Max Units value.

CAUSE
This problem occurs only when you assign a resource part-time, so that the Units value for the resource is a decimal value. This is not a problem when you assign a resource as a whole number unit.

STATUS
Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

Steps to Reproduce Behavior
(Steps to reproduce behavior in Microsoft Project version 4.0.)


 * 1) In a new project, enter 3 tasks, T1, T2, and T3, each with a duration of 1 day.
 * 2) From the Standard toolbar, choose the Resource Assignment button. In the Name column, type John and press ENTER. On the Gantt chart, select T1. In the Resource Assignment dialog box, select the Units column for John, and type .4. Choose Assign.
 * 3) On the Gantt chart, select T2. In the Resource Assignment dialog box, select the Units column for John, and type .2. Choose Assign.
 * 4) On the Gantt chart, select T3. In the Resource Assignment dialog box, select the Units column for John, and type .1. Choose Assign. In the Resource Assignment dialog box, choose Close.
 * 5) From the View menu, choose Resource Sheet. In the Max. Units column for John, type .7 and press ENTER.

The color of the text in the Resource Sheet becomes red, and the status bar contains the message "Level:John" indicating that John is overallocated even though the Peak Units value is equal to the '''Max. Units''' value for this resource.