How To Fix CJ028 - Simulations already exist for the WBS element

SAP Error Message - Details

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 028

• Message text: Simulations already exist for the WBS element

What causes this issue?

You want to change an operative WBS or sub-tree. Active simulations
already exist for this WBS element/these WBS elements. Changing the
operative network while simulations are active could lead to data
inconsistencies.

System Response

The system lets you make a change.

How to fix this error?

Make sure that you really want to change the operative WBS elements and
not the simulation version.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CJ028 - Simulations already exist for the WBS element ?

  The SAP error message CJ028 ("Simulations already exist for the WBS element") typically occurs in the context of project management within SAP, particularly when dealing with Work Breakdown Structures (WBS) and project simulations. This error indicates that there are already existing simulations for the specified WBS element, which prevents the creation of new simulations.
  Cause:
  
  Existing Simulations: The primary cause of this error is that there are already simulations created for the WBS element you are trying to work with. SAP does not allow multiple simulations for the same WBS element to avoid confusion and data integrity issues.
  Incorrect WBS Element: You may be trying to create a simulation for a WBS element that is not intended for simulation or is incorrectly specified.
  System Configuration: There may be specific configurations or settings in your SAP system that restrict the creation of new simulations under certain conditions.
  
  Solution:
  
  Check Existing Simulations: Before attempting to create a new simulation, check if there are existing simulations for the WBS element. You can do this by navigating to the relevant transaction (e.g., CJ20N for Project Builder) and reviewing the simulations associated with the WBS element.
  Delete or Modify Existing Simulations: If you find existing simulations that are no longer needed, you can delete or modify them to free up the WBS element for new simulations. Ensure that you have the necessary authorizations to perform these actions.
  Use a Different WBS Element: If the existing simulations are required and cannot be deleted, consider using a different WBS element for your new simulation.
  Consult Documentation: Review SAP documentation or help files related to project simulations and WBS elements for additional guidance on managing simulations.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJ30 (Project Simulation), and CJ31 (Project Planning).
  SAP Notes: Check SAP Notes for any updates or specific fixes related to error CJ028.
  User Authorizations: Ensure that you have the necessary authorizations to create, modify, or delete simulations in the SAP system.
  Training and Documentation: Consider training sessions or documentation on project management in SAP to better understand how simulations and WBS elements work.
  
  By following these steps, you should be able to address the CJ028 error and manage your project simulations effectively.