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Negative Float on Milestone?

12 replies [Last post]
Wed, 2008-05-28 03:31
Victoria Tan
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Hi Guys,
I have a milestone in my P5 schedule which finish date is correct as planned. However, the milestones and all of its predecessors (20#) are showing negative float, while all of its successors are showing positive float.

There are no constraints in the logic path, no must finish by date on the project, and I am scheduling using progress override.

Any ideas please?
Vicky
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Replies

Thu, 2008-05-29 09:20
#1
Ronald Winter
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Look for external relationships to activities outside of your current schedule. Add the Projects column to your relationship tabs. This may show you something. Good luck!
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Wed, 2008-05-28 11:35
#2
David Podmore
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Hi Victoria,

Still having probs? I have found that on very rare occasions that some actual data once entered and then removed (for whatever reason) can remain in the database despite appearing not to. If the job is not too onerous I would be tempted to make an XER of where you are now so you can go back and then take off progress, task by task, up the logic stream, recalculating after each. You may find the oddity this way.
If you do find it, note the task details and delete it. Add it back in as before and retrace the progress back to now. A hassle but no one said detective work is easy...

David
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Wed, 2008-05-28 05:57
#3
Satya Narayana
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Thats really tricky
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Wed, 2008-05-28 05:22
#4
Victoria Tan
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Hi Sat,

Yes some predecessors have actual dates but I am using progress override?

I changed milestone to finish but float still the same.

Looks like a long nite for me...boss said negative float cannot lah! :-)

Cheers
Vicky
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Wed, 2008-05-28 05:11
#5
Satya Narayana
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check if some actual date was entered in any of the activity
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Wed, 2008-05-28 05:10
#6
Anoon Iimos
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i’m sure there are invalid relationships as well in the schedule log, try changing it to finish milestone and see what happens, or you can add another milestone (in this case you need to change the logic).
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Wed, 2008-05-28 04:56
#7
Victoria Tan
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Hi Anoon,

It is a start milestone.

Cheers
Vicky
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Wed, 2008-05-28 04:14
#8
Anoon Iimos
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is it a finish milestone or a start milestone?
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Wed, 2008-05-28 04:09
#9
Victoria Tan
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Thanks again Oliver,

I am using P5 as Standalone.

Any other suggestions?

Cheers
Vicky
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Wed, 2008-05-28 03:59
#10
Oliver Melling
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Try pressing F5 to refresh the data as someone on the same database might have added something whilst you’ve working.
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Wed, 2008-05-28 03:52
#11
Victoria Tan
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Checked already Oliver.

I’m tearing my hair out here...

Please anyone? I’m fairly new to P5 but have not come across this in P3 before.

Thanks
Vicky

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Wed, 2008-05-28 03:43
#12
Oliver Melling
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Double check that you don’t have any constraints on the milestone?
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