How to find reason for negative slack

S

Stuart Rosen

Firstly, I would like to thank the regular contributors for adding s
much value to this Forum. I have found it an invaluable resource.

I have a task in my schedule, that is showing 20 days of negative slack
The task has one predecessor (already 100% complete) and a number o
successors. No activities in the chain of sucessors have constraints
they are all "Start As Soon As Possible". Also, none of the successo
activites have any actual values recorded, as they have not yet started
There are no deadlines in the schedule either.

I have generally found tracking down the offending task that cause
negative slack very time consuming and at times confusing.

Does anyone have any other items to look for, or any hints as to how t
find the offending negative slack item ?

Thanks in advance
 
T

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J

Jan De Messemaeker

HI,

Show the total slack column.
Auto Filter on the negative slack value.
The last one with negative slack is he culprit
And you WILL find it to have a constraint, a deadline, or an actual start
date.
Mind you, you can have an Actual Staryt date without having any actual work
nor duration recorded.
HTH
--
Jan De Messemaeker
Microsoft Project Most Valuable Professional
+32 495 300 620
For availability check:
http://users.online.be/prom-ade/Calendar.pdf
 
S

Stuart Rosen

Hi Trevor / Jan,

Thanks for your responses to this, and thanks for the offer to send th
schedule through Trevor

I believe that there was a corruption in the file that led to this.
tried to remove my password from the schedule to send through to Trevor
It did not work as the resulting unprotected file was corrupted.
then tried to export to XML and create a new project file to sen
through.....and when I recreated the file from XML, the negative slac
had disappeared. Just out of interest, I then opened the offendin
schedule to check the calculation options. It was set to Automati
calculation. However, when I pressed "Calculate Now", the negativ
slack was removed

Thanks again for your offers of assistance

Stuar
 

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