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CJ20N link activites form different network

Mar 03, 2017 at 02:56 PM

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Hi ,

We try to do the scheduling in the CJ20N T-CODE , we have different WBS and Network and activities from network to network we need to have link between them.


In the second picture you can see I have two equipments in the project
OPER = Operation DEMO = Demobilization.

  • So the duration of the location 8000108 0070 is finished we need to go and make the off-hire in the demobilization for the 8000056 041 and the other activities will follow

As you can see in the scond picture I linked every activities in the first network 8000108 and the last one is link FS to the first activities of the demobilization but as you can see the dates Goes from 06.02.2019 to 31.03.2023 for the Equipment.


SAP let met link activities from different network but the scheduling is not moving that way could you help me with the situation or we cannot link activities from diffrent network to make my scheduling like MS-PROJECT

Thank you

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4 Answers

Ken Melching
Mar 03, 2017 at 03:03 PM
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What are your Network Scheduling Parameters and the WBS Scheduling Parameters?

Try running CJ29 and/or CN24N.

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Hi Ken , first thanks for your help.


  • On the first attachment you can see my network scheduling parameters
  • On the second print screen my WBS scheduling Parameters
  • I only have constraints on the fist activity of each equipment

For CN24N I never used this transaction and if I try to enter my project and press enter I have a message saying I don't have any selection ?

For CJ29 if I execute it I still have the same Gap Between network as I first indicate in previous question is that normal ?


Thank you

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Islam El-Shamy Mar 08, 2017 at 11:27 AM
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Try To check if there is any constrains in these activities .

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Hi Islam , Thank you for your help.

As you can see on the printscreens

  • I have Constraints on the First activity on the T-00003-OPER-1 (Network 800108 activity 0010)
  • I have constraints on the first activity of the second equipement T-00003-OPER-2 (Network 8000060 activity 0010)

I dont have any other constrains any where in the project. The reason I put them is to be sure that SAP will not reschedule to and earlier date than the real begin of my project


But you can confirm me , we can produce cross-network scheduling ?

thank you


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Hi Steven,

These constrains are not the reason of the problem , Try to check if you select scheduling scenario Top Down in the project definition and check the basic date of the WBS element T-0003-Demo-1 & T-0003-Demo-2 .

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Hi Islam,

Here are the information I have in the project definition , I changed the Free scheduling scenario for the TOP-DOWN and let SAP rescheduling the project but nothing had change I still have the same GAP between the operation WBS and the Demobilization WBS. The basic date remain the same too... Do you have any Idea or something i'm missing to do ?

thank you

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Hi Islam,

I made a mistake the date had changed but as you can see in the following image , DEMO-1 take the latest date from the OPER-1 for the earlier date to start but it should start the 26.01.2019 not the 31.03.2023

Do you how I can change this situation and I think my scheduling might work.

Thank you

date-changed.jpg (177.4 kB)
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steven cooper Mar 14, 2017 at 05:10 PM
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Hi Islam,

I made a mistake the date had changed but as you can see in the following image , DEMO-1 take the latest date from the OPER-1 for the earlier date to start but it should start the 26.01.2019 not the 31.03.2023

Do you how I can change this situation and I think my scheduling might work.

Thank you


date-changed.jpg (177.4 kB)
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steven cooper Mar 21, 2017 at 02:48 PM
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Still no news anyone can help me with the link here from different networks not taking the earlier finish date and put it on the earlier date of the next network ?

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