How To Fix CN239 - The network type cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 239

• Message text: The network type cannot be changed

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN239 - The network type cannot be changed ?

  The SAP error message CN239, which states "The network type cannot be changed," typically occurs in the context of project management and network planning within SAP. This error arises when there is an attempt to change the type of a network that is not allowed due to certain constraints or conditions.
  Causes:
  
  Network Status: The network may be in a status that does not allow changes. For example, if the network is already released or has been used in a project, changing its type may not be permitted.
  Dependencies: There may be dependencies or relationships with other objects (like activities or projects) that prevent the change.
  Configuration Settings: The system configuration may restrict changes to network types based on business rules or settings defined in the system.
  Data Integrity: Changing the network type could compromise data integrity, leading to restrictions on such actions.
  
  Solutions:
  
  Check Network Status: Verify the status of the network. If it is released or in a status that does not allow changes, you may need to revert it to a status that permits changes (e.g., "Created" or "In Process").
  Review Dependencies: Look for any dependencies or relationships with other objects that might be causing the restriction. You may need to adjust or remove these dependencies before changing the network type.
  Consult Configuration: Check with your SAP administrator or configuration team to understand if there are specific settings that prevent changing the network type. They may need to adjust these settings if appropriate.
  Use Alternative Methods: If changing the network type is not possible, consider creating a new network with the desired type and transferring the relevant activities or components from the old network to the new one.
  Documentation and Support: Refer to SAP documentation for specific guidelines on network types and their restrictions. If the issue persists, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN21 (Create Network), CN22 (Change Network), and CN23 (Display Network) to manage networks effectively.
  SAP Notes: Check for any SAP Notes related to error CN239 for additional insights or patches that may address the issue.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes to networks, as restrictions may also arise from user roles.
  
  By following these steps, you should be able to diagnose and resolve the CN239 error in SAP.