How to find reason for negative slack
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From: Stuart Rosen on 6 May 2010 23:08 Firstly, I would like to thank the regular contributors for adding so 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 of successors. No activities in the chain of sucessors have constraints - they are all "Start As Soon As Possible". Also, none of the successor 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 causes negative slack very time consuming and at times confusing. Does anyone have any other items to look for, or any hints as to how to find the offending negative slack item ? Thanks in advance. -- Stuart Rosen ------------------------------------------------------------------------ Stuart Rosen's Profile: http://forums.techarena.in/members/199571.htm View this thread: http://forums.techarena.in/microsoft-project/1334655.htm http://forums.techarena.in
From: Trevor Rabey on 7 May 2010 01:25 I never have any such problems with negative slack. In the absence of date constraints and deadlines, there are not any other obvious culprits and it is difficult to assist without seeing it. Send it to me? Host the file on Rapidshare or similar? -- Trevor Rabey 0407213955 61 8 92727485 PERFECT PROJECT PLANNING www.perfectproject.com.au "Stuart Rosen" <Stuart.Rosen.4akp1b(a)DoNotSpam.com> wrote in message news:Stuart.Rosen.4akp1b(a)DoNotSpam.com... > > Firstly, I would like to thank the regular contributors for adding so > 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 of > successors. No activities in the chain of sucessors have constraints - > they are all "Start As Soon As Possible". Also, none of the successor > 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 causes > negative slack very time consuming and at times confusing. > > Does anyone have any other items to look for, or any hints as to how to > find the offending negative slack item ? > > Thanks in advance. > > > -- > Stuart Rosen > ------------------------------------------------------------------------ > Stuart Rosen's Profile: http://forums.techarena.in/members/199571.htm > View this thread: http://forums.techarena.in/microsoft-project/1334655.htm > > http://forums.techarena.in >
From: Jan De Messemaeker on 9 May 2010 07:20 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 "Stuart Rosen" <Stuart.Rosen.4akp1b(a)DoNotSpam.com> wrote in message news:Stuart.Rosen.4akp1b(a)DoNotSpam.com... > > Firstly, I would like to thank the regular contributors for adding so > 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 of > successors. No activities in the chain of sucessors have constraints - > they are all "Start As Soon As Possible". Also, none of the successor > 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 causes > negative slack very time consuming and at times confusing. > > Does anyone have any other items to look for, or any hints as to how to > find the offending negative slack item ? > > Thanks in advance. > > > -- > Stuart Rosen > ------------------------------------------------------------------------ > Stuart Rosen's Profile: http://forums.techarena.in/members/199571.htm > View this thread: http://forums.techarena.in/microsoft-project/1334655.htm > > http://forums.techarena.in >
From: Stuart Rosen on 9 May 2010 20:58
Hi Trevor / Jan, Thanks for your responses to this, and thanks for the offer to send the schedule through Trevor. I believe that there was a corruption in the file that led to this. I tried to remove my password from the schedule to send through to Trevor. It did not work as the resulting unprotected file was corrupted. I then tried to export to XML and create a new project file to send through.....and when I recreated the file from XML, the negative slack had disappeared. Just out of interest, I then opened the offending schedule to check the calculation options. It was set to Automatic calculation. However, when I pressed "Calculate Now", the negative slack was removed. Thanks again for your offers of assistance. Stuart -- Stuart Rosen ------------------------------------------------------------------------ Stuart Rosen's Profile: http://forums.techarena.in/members/199571.htm View this thread: http://forums.techarena.in/microsoft-project/1334655.htm http://forums.techarena.in |