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Primavera Project Planner - P3

Project / Activity Dates

In the Open Standard
Jonathan WardMember for 19 years 8 months
Created
22
10
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once again, another question i’m sure you will all find remarkably easy,, i have a project containing numerous activities all with different Early Start/Finish Dates, i have been asked to run some different scenarios in changing the project dates (we are governed by the arrival of an accomodation barge) i have tried changing the date on the Data Date line but this does not change the dates of all of the activities, is there a method of changing all of the activity dates in one hit to give figures for differnet scenarios?
many thanks
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  1. 0
    Steven Oliver ·
    #1
    Isnt that what scheduling is supposed to do ?
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  2. 0
    Jonathan Ward ·
    #2
    thats got it,, thanks again
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  3. 0
    Jonathan Ward ·
    #3
    , sorry, one more, that works when the scheduled data date is taken forward, what about when the scheduled data date is taken back? the line moves but the activity dates stay where they are?
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  4. 0
    Steven Oliver ·
    #4
    Thats because the activities placement in time is dictated by the logic in the schedule. If you need to impose a different start/finish, then use constraints or calendars
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  5. 0
    Jonathan Ward ·
    #5
    ,, so would i have to change the constrains on each individual activity or is there a method of group change? obviously alot of the activitis start at later dates in the schedule, i have many activities running in different calendars so if changing the constrains is the best method i woould rather use this,,
    thank you very much for your help
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  6. 0
    Steven Oliver ·
    #6
    You could use a combination of activity codes and global change, if you have a lot of changes, but a well constructed schedule is by far the best option.
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  7. 0
    Jonathan Ward ·
    #7
    how do you specify a new start date for activities in a global change? sorry to keep asking these tedious questions
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  8. 0
    Steven Oliver ·
    #8
    SNE = es + 10d


    for instance
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  9. 0
    Jonathan Ward ·
    #9
    thanks Steven thats great
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  10. 0
    Jonathan Ward ·
    #10
    this will be the very last question on this subject:
    when i apply the Global change (i have made several copies of my Plan so i’ve got back-up), do i enter the criteria on the Change of the Selection tab? i assume it is the Change tab, when i have runu this i get the error that the activities already exist??
    the criteria i enter are as follows:

    IF : ACT | CN | SYS (my activity codes i want to change) | - | 20d.

    THEN: ACT | CN | ACT


    thanks again
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  11. 0
    Steven Oliver ·
    #11
    To try and phrase your question into english, is it

    If
    Activity ID Contains "SYS"
    Then
    Constrain the start to 20 days prior to the current early start ?
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  12. 0
    Jonathan Ward ·
    #12
    that is correct
    - sorry if i’m talking in riddles

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  13. 0
    Steven Oliver ·
    #13
    If you are trying to overrule the logic of your schedule, you will need to use Mandatory Constraints.

    On the change tab of Global change

    If Act Cn "SYS"

    Then SNE = ’ Removes any existing constraints
    MS = ES - 20


    Then re-schedule

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  14. 0
    Jonathan Ward ·
    #14
    what do i need to enter in the Data Item/Value column on the same row as SNE?
    i.e
    then SNE EQ ___
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  15. 0
    Steven Oliver ·
    #15
    Nothing, all it is doing is removing any existing constraints, as in P3 an activity can only be assigned one type of constraint.
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  16. 0
    Jonathan Ward ·
    #16
    yep
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  17. 0
    Jonathan Ward ·
    #17
    sorry Steven,
    i’m getting an error the reads - Invalid Criteria Code

    i have nothing other than SNE in that row now
    under that row i have this:
    MS EQ ES - 20
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  18. 0
    Steven Oliver ·
    #18
    Needs to be

    SNE EQ
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  19. 0
    Jonathan Ward ·
    #19
    i’m getting
    invalid data item/value

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  20. 0
    Steven Oliver ·
    #20
    Which probably means that you dont have any Early Constraints set
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  21. 0
    Syam Mohan ·
    #21

    Hi everyone,

    Hi everyone,

                      In my p6 software dates are not changing for particular activities according to the relation given. The calender assigned is same for all activities. Please help me with your valuable suggestions to fix this.

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  22. 0
    Zoltan Palffy ·
    #22

    you don't really specify a

    you don't really specify a new start date for each activity that what the logic and durations are for. Progress the activities accordingly with actual start and or finish dates and change the remaining duration if the activity is in progress and not complete. Then move the data date and re-schedule the project.

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