How To Fix MPE_INSTALLATION_MSG020 - Different networks of same project have different parameter eff. value

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_INSTALLATION_MSG -

• Message number: 020

• Message text: Different networks of same project have different parameter eff. value

What causes this issue?

You have specified different parameter effectivity values for the
networks of the same WBS element.

System Response

MRP cannot separate demand that has different parameter effectivity
values. MRP can separate demand for different end-item units and explode
the BOM correctly only if demand with different parameter effectivity
values also has different WBS elements.

How to fix this error?

Change the model/unit of the network using transaction <AB>CJ20N</>.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_INSTALLATION_MSG020 - Different networks of same project have different parameter eff. value ?

  The SAP error message MPE_INSTALLATION_MSG020 indicates that there is a discrepancy in the effective parameter values across different networks within the same project. This typically occurs in the context of project management or network planning in SAP, where different networks (or activities) are expected to have consistent parameter settings.
  Cause:
  The error arises when:
  
  Different networks within the same project have been assigned different effective values for the same parameters.
  This inconsistency can occur due to manual changes, data imports, or configuration settings that were not uniformly applied across all networks.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify the Networks: Determine which networks are causing the issue. You can do this by reviewing the project structure and the parameters assigned to each network.
  
  
  Check Parameter Settings: For each network, check the effective parameter values. You can do this by navigating to the network details in the project management module.
  
  
  Standardize Parameter Values: Ensure that the effective parameter values are consistent across all networks. You may need to:
  
  Update the parameter values in the networks that have incorrect or differing values.
  Use transaction codes like CJ20N (Project Builder) to edit the project and its networks.
  
  
  
  Review Configuration: If the issue persists, review the configuration settings in the project management module to ensure that there are no underlying issues causing the discrepancies.
  
  
  Test Changes: After making the necessary adjustments, test the changes to ensure that the error message no longer appears.
  
  
  Documentation: Document the changes made for future reference and to help prevent similar issues from occurring.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CJI3 (Project Actual Line Items), and CJ02 (Change Work Breakdown Structure).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional insights or solutions.
  User Roles: Ensure that you have the necessary permissions to make changes to project parameters and networks.
  Training: If you frequently encounter this error, consider additional training on project management within SAP to better understand how to manage parameters and networks effectively.
  
  By following these steps, you should be able to resolve the error and ensure consistency across your project networks.