How To Fix CN799 - Versions already exist for network &; deletion not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 799

• Message text: Versions already exist for network &; deletion not possible

What causes this issue?

Project versions exist for network &v1&. You cannot delete the network
itself as long a the project versions exist.

System Response

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

How to fix this error?

Delete the project versions first.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN799 - Versions already exist for network &; deletion not possible ?

  The SAP error message CN799 indicates that there are existing versions of a network in the system, which prevents the deletion of that network. This typically occurs in the context of project management or network planning within SAP, where multiple versions of a network can exist for various reasons, such as changes in project scope, updates, or revisions.
  Cause:
  
  Existing Versions: The primary cause of this error is that the network you are trying to delete has one or more versions already created. SAP allows for version management to track changes over time, and if versions exist, the system will not allow deletion to maintain data integrity.
  Dependencies: There may be dependencies or links to other objects (like activities, orders, or projects) that are preventing the deletion of the network.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to delete the network or its versions.
  
  Solution:
  
  Check Existing Versions: Use transaction codes like CN21 (Create Network) or CN22 (Change Network) to check for existing versions of the network. You can also use transaction CNO1 to view the versions.
  Delete Versions: If you determine that the existing versions are no longer needed, you can delete them using transaction CN22. Make sure to delete all versions before attempting to delete the network itself.
  Check Dependencies: Ensure that there are no dependencies or linked objects that are preventing the deletion. You may need to delete or unlink these objects first.
  Authorization Check: Verify that you have the necessary authorizations to perform deletion actions. If not, contact your SAP security administrator to obtain the required permissions.
  Consult Documentation: Refer to SAP documentation or help files for more detailed instructions on managing networks and versions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CN21 - Create Network
  CN22 - Change Network
  CN23 - Display Network
  CNO1 - Display Network Versions
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to network version management.
  User Roles: Ensure that your user role has the necessary permissions for managing networks and their versions.
  
  If the problem persists after following these steps, consider reaching out to your SAP support team for further assistance.