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Old 05-27-2016, 05:27 AM
ana ana is offline Total Slack Calculation Incorrect in SubProjects vs MasterPlan Windows 7 32bit Total Slack Calculation Incorrect in SubProjects vs MasterPlan Office 2010 32bit
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Total Slack Calculation Incorrect in SubProjects vs MasterPlan
 
Join Date: May 2016
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Exclamation Total Slack Calculation Incorrect in SubProjects vs MasterPlan

Hi All,



I have created a Master Plan with multiple sub projects, using Microsoft Project Pro 2010. My Critical Path has negative slack, which is properly displayed on the Master-plan, however when I open a subproject, that is in the Critical Path with negative slack, the Total slack shows zero days instead of (-)xx days.

Example:

In the Master Plan, The last task on Project A is a milestone, that is linked to the first task on Project B.
In the Master Plan, Project A has (-16) days of Total slack and Project B has (-16) days of Total slack.

When I open Project A - Total slack is zero
When I open Project B - Total slack is (-16) days

I have run some tests but none seem to solve the issue:
1.I have selected and deselected Multi Critical Path box - Still show the same issue
2.I have selected and deselected the "Inserted Projects are Calculated Like Summary Tasks" - Still show the same issue
3.The calendar is the same across all the sub-projects and Master-plan.
4.The Custom Fields are the same across all the sub-projects and Master-plan.
5. I have Service Pack 2 on my PC



Has anyone came across with this issue?

Thank you for your help in advance
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  #2  
Old 05-30-2016, 04:32 PM
JulieS JulieS is offline Total Slack Calculation Incorrect in SubProjects vs MasterPlan Windows 7 64bit Total Slack Calculation Incorrect in SubProjects vs MasterPlan Office 2013
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Join Date: Dec 2011
Location: New England
Posts: 1,693
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Do you have any tasks in the master project that are not part of the subproject? Normally negative total slack is from a missed deadline or constraint. Have you added constraints in the master project that are not in the subprojects?
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  #3  
Old 05-31-2016, 04:01 AM
ana ana is offline Total Slack Calculation Incorrect in SubProjects vs MasterPlan Windows 7 32bit Total Slack Calculation Incorrect in SubProjects vs MasterPlan Office 2010 32bit
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Total Slack Calculation Incorrect in SubProjects vs MasterPlan
 
Join Date: May 2016
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ana is on a distinguished road
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Hi Julie,

thank you for your reply.

I have a constraint in Sub - Project B, however I don't see why the negative slack wouldn't appear in project A anyway, since the activities in this file are preceding Project B.
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  #4  
Old 05-31-2016, 07:58 AM
JulieS JulieS is offline Total Slack Calculation Incorrect in SubProjects vs MasterPlan Windows 7 64bit Total Slack Calculation Incorrect in SubProjects vs MasterPlan Office 2013
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Join Date: Dec 2011
Location: New England
Posts: 1,693
JulieS will become famous soon enough
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Are you opening subproject A outside of the master project? If so, it is not calculating the negative slack due to its relationship to project B.
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