How To Fix CN162 - Activity & network & was already deleted (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 162

• Message text: Activity & network & was already deleted (see long text)

What causes this issue?

You want to assign a BOM item to a network activity that has since been
deleted.

How to fix this error?

Choose another activity.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN162 - Activity & network & was already deleted (see long text) ?

  The SAP error message CN162 indicates that an activity or network has already been deleted in the system. This error typically occurs when you attempt to perform an operation (such as changing or displaying) on a network or activity that no longer exists in the database.
  Cause:
  
  Deletion of Network/Activity: The most common cause is that the network or activity you are trying to access has been deleted by another user or process.
  Data Consistency Issues: There may be inconsistencies in the database, possibly due to incomplete transactions or errors during data processing.
  Incorrect References: The operation may be referencing an incorrect or outdated network/activity ID.
  
  Solution:
  
  Verify Existence: Check if the network or activity still exists in the system. You can do this by navigating to the relevant transaction (e.g., CN21 for networks or CN22 for activities) and searching for the ID.
  Refresh Data: If you are working in a session where data might have changed, try refreshing the session or logging out and back in to ensure you have the latest data.
  Check Change Logs: If you have access, review the change logs to see if the network or activity was deleted and by whom. This can provide context for the deletion.
  Consult with Colleagues: If you are in a collaborative environment, check with your colleagues to see if they have made changes that could affect the network/activity you are trying to access.
  Error Handling: If you are developing or customizing reports or programs, ensure that your code includes error handling to manage cases where a network or activity may have been deleted.
  
  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 and activities.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  User Authorization: Ensure that you have the necessary authorizations to view or modify the network/activity in question. Lack of proper permissions can sometimes lead to misleading error messages.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team for further assistance.