How To Fix CN466 - Activity &1/&2 has already been replaced by subnetwork &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 466

• Message text: Activity &1/&2 has already been replaced by subnetwork &3

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN466 - Activity &1/&2 has already been replaced by subnetwork &3 ?

  The SAP error message CN466 indicates that a specific activity in a project has been replaced by a subnetwork. This typically occurs in the context of project management within SAP, particularly when dealing with networks and activities in the Project System (PS) module.
  Cause:
  The error message CN466 is triggered when:
  
  An activity (identified by &1 and &2) is being referenced or processed, but it has already been replaced by a subnetwork (identified by &3).
  This situation can arise if there are changes made to the project structure, such as when a network is restructured, and the original activity is no longer valid because it has been replaced by a more detailed subnetwork.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Project Structure: Review the project structure to understand how the activity has been replaced by the subnetwork. You can do this by navigating to the project in the Project Builder (transaction code CJ20N) or the Network Overview (transaction code CN21).
  
  
  Update References: If you are trying to perform an operation on the original activity, you may need to update your references to point to the new subnetwork instead. This may involve changing assignments or dependencies in your project.
  
  
  Review Network and Activity Settings: Ensure that the settings for the network and activities are correctly configured. Check if the subnetwork is properly defined and that all necessary components are in place.
  
  
  Consult Documentation: If you are unsure about the changes made to the project, consult the project documentation or speak with the project manager or team members who may have made the changes.
  
  
  Use Transaction Codes: Utilize relevant transaction codes to analyze the project and network structure:
  
  CJ20N: Project Builder
  CN21: Create Network
  CN22: Change Network
  CN41: Network Overview
  
  
  
  Error Logs: Check for any additional error logs or messages that may provide more context about the issue.
  
  
  Related Information:
  
  SAP Notes: Look for SAP Notes related to error CN466 for any specific patches or updates that may address known issues.
  Documentation: Review SAP Help documentation for Project System (PS) to understand how networks and activities are managed.
  Training: If you are frequently encountering issues with project structures, consider additional training on SAP Project System functionalities.
  
  By following these steps, you should be able to identify the cause of the CN466 error and take appropriate action to resolve it.