Project Management

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Topics: Schedule Management, Scheduling, Work Breakdown Structures (WBS)
Work Breakdown Structure numbering
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Elizabeth Harrin Director| RebelsGuideToPM.com London, England, United Kingdom
With your work breakdown structures, which numbering convention do you use:
1 is the very top level ("the project") so everything on the WBS starts with 1.something.
0 is the very top level, and the first level is 1, 2, 3 etc so the WBS has items called 1.3, 2.5, 3.1 etc.

I have always used the second option, and had 1, 2, 3, as the main components. But our new software tool only lets us use 1.x and now I have some tasks called 1.2.1.1.3 etc. I think it's confusing to have everything starting with 1 - I don't see the point of it, you might as well drop the 1.

A quick Google shows that there are images of WBS using both systems for numbering. Is there a definitive, best practice approach?

This is hard to explain without a graphic, but hopefully you understand what I mean!
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Thomas Walenta Global Project Economy Expert| self Hackenheim, Germany
While it seems cumbersome to put a number on the project level with only one element, it nevertheless gives an ID to that level in the 'code of accounts' (PMBoK). If you replace this ID 1 with a project ID, you might use a big data base with work packages and have a unique identifier across the portfolio.
Nevertheless, I would expect a software package to give me a choice.
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SHADAV MOHAMMAD ANSARI PMO| ITC INFOTECH INDIA PVT. Ltd. New Delhi, Delhi, India
Hi,
I use Second option. Project Name ( Project saved as name " New Software")at TOP most Row is 0 . Tasks at First level are represented by 1 ,2 and 3 etc. Sub tasks are represented 1.1 , 1.2 , 2.1, 2.2 ,2.3 ,3.1 etc.
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Sergio Luis Conte Helping to create solutions for everyone| Worldwide based Organizations Buenos Aires, Argentina
This is the way we use:
1 tarea uno
1.1 tarea dos
1.1.1 tarea tres
2 tarea cuatro
2.1 tarea cinco
3 tarea seis
4 tarea siete
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Kiron Bondale Retired | Mentor| Retired Welland, Ontario, Canada
Elizabeth -

I agree - numbering the top most node (the project) is pointless. I find it more useful to start numbering with the deliverables at the top-most level of the WBS but as you said, some software tools aren't flexible enough to permit WBS ID customization.

Kiron
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Steve Ratkaj Ontario, Canada
At the moment we are "stuck" using MS Project. Our WBS is as follows:

1.0 - Project (Name)
1.1 - Identification Phase
1.2 - Options Analysis Phase
1.3 - Definition Phase
1.4 - Implementation Phase
1.5 - Close Out Phase

Presently, each phase is structured as follows:

1.1.1 - Project Management
1.1.2 - Project Approval
1.1.3 - Operational Requirements
1.1.4 - Procurement Documents
1.1.5 - Engineering and Support Documents

Lowest level for activities is as an example: 1.1.1.1.1.2. I just got WBS Schedule Pro and am still figuring it out as we are in the process of developing a "corporate" (75% solution) WBS for all of our projects. Hope this adds some insight.
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Abolfazl Yousefi Darestani Manager, Quality and Continuous Improvement| Hörmann-TNR Industrial Doors Newmarket, Ontario, Canada
I saw a bunch of different methods. generally, similar to what MSP or Primavera do.
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Keith Novak Tukwila, Wa, USA
If your WBS fits into a program/product family like a line of cars, then the first digit of the WBS can describe which product and it doesn't always start with 1. In manufacturing, the WBS often directly correlates to the configuration control numbering system, and when you see any part number, you can identify which product it comes from based on the digit corresponding to the top WBS level.
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Elizabeth Harrin Director| RebelsGuideToPM.com London, England, United Kingdom
Thanks for the helpful comments, everyone. It looks like we might be stuck with it. I think the software we are using is "modelled" on MSP, so ours is working like @Steve describes MS Project doing.
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Vincent Guerard Coach - Trainer - Speaker - Advisor| Freelance Mont-Royal, Quebec, Canada
Elizabeth,

I would use a custom field to make the project WBS you required. You should be able to customize most report or display to show that field instead of the built-in field.
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Ruth Marina Lopez Perez Responsable TI| INSTITUTO DE PREVISION SOCIAL MILITAR - NICARAGUA Masaya, Los Madrigales, Nindirí, Nicaragua
Dear Elizabeth:
I agree with the numbering convention you use for WBS, it's the one I prefer. The other way I also find it confusing.
The new software tool that you now have, should allow numbering starting with 0 and you may not have discovered it. But I think it's a matter of getting used to the new way. Perhaps it is possible to request the developer of the software, which allows numbering 0 for the top level of the WBS.
The software developer did not manage those numbering requirements.
Adaptation to change is the key.
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