Project Err Msg: Cannot Resolve Overallocation of X...
  
PSS ID Number: Q108407
Article last modified on 10-20-1995
 
3.00 3.00a | 3.00
 
WINDOWS    | MACINTOSH
 

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The information in this article applies to:
 
 - Microsoft Project for Windows, versions 3.00 and 3.00a
 - Microsoft Project for the Macintosh, version 3.0
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SUMMARY
=======
 
When Microsoft Project cannot solve an overallocation problem for a
resource during a specific time period, any task using that resource during
that period, whether moveable or not, will not be leveled. A time period is
equivalent to one minute.
 
When Microsoft Project cannot delay the tasks involved in an
overallocation of a resource during a time period, you will receive the
error message:
 
   Cannot Resolve Overallocation of <resource> on <date>
   at <time>. Continue?
 
MORE INFORMATION
================
 
This error message alerts you that Project cannot delay the tasks it needs
to, in order to complete the leveling process. Some possible causes for
this error message include:
 
 - The tasks involved have constraints, such as Must Start On and Must
   Finish On. These constraints will not allow Microsoft Project to move
   the tasks, and thus cannot be delayed through leveling.
 
 - The tasks involved have actual dates, such as an Actual Start date and
   an Actual Finish Date. When an actual value is entered for a task,
   Microsoft Project will not move it.
 
 - Leveling is set to Delay Only Within Slack. From the Options menu,
   choose leveling, and look at the Delay Only Within Slack check box. If
   this item is selected, then Microsoft Project can only delay tasks
   within the amount of slack for each task. If the task does not have any
   slack time available, then the program will be unable to delay it, and
   the error message will occur.
 
 - The project is using Finish to Start Scheduling. From the Options menu
   choose Project Info, and look to see which button is highlighted, Start
   or Finish. If the project is using Finish scheduling, then Microsoft
   Project will schedule those tasks as late as possible. Thus, leveling
   will not work because the tasks cannot be delayed past the project
   finish date.
 
Steps to Reproduce Behavior
---------------------------
 
1. From the Options menu, choose Leveling and select Manual.
 
2. From the File menu, choose New.
 
3. Create two tasks with names task1 and task2, respectively.
 
4. Assign the same Resource to both tasks.
 
5. Change the percent complete for task1 and task2 to 10%.
 
6. From the Options menu, choose Level Now.
 
REFERENCES
==========
 
"User's Reference," version 3.0, pages 217-221
 
KBCategory: kbusage
KBSubcategory:
 
Additional reference words: 3.00 3.00a
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Copyright Microsoft Corporation 1995.
