How To Fix CN846 - You cannot create because network & is not locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 846

• Message text: You cannot create because network & is not locked

What causes this issue?

You attempted to create an activity in network &V1& which is not locked
by using the insert or copy function.

System Response

The system does not create the activity.

How to fix this error?

Branch to maintenance with network &V1& and create the desired
activity.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN846 - You cannot create because network & is not locked ?

  The SAP error message CN846 indicates that you are trying to create a network in the Project System (PS) module, but the network you are attempting to create is not locked. This typically occurs when there are issues with the status of the network or project.
  Cause:
  
  Network Status: The network you are trying to create or modify is not in a status that allows for changes. It may be in a status that is not locked for editing.
  Project Locking: The project or network may be locked by another user or process, preventing changes from being made.
  Authorization Issues: The user may not have the necessary authorizations to create or modify the network.
  
  Solution:
  
  
  Check Network Status: 
  
  Go to the network in question and check its status. Ensure that it is in a status that allows for creation or modification (e.g., "Created" or "Released").
  If the network is in a status that does not allow changes, you may need to change its status to a permissible one.
  
  
  
  Locking Mechanism:
  
  Ensure that no other user or process is currently using or locking the network. You can check for locks using transaction code SM12 to see if there are any active locks on the network.
  If you find locks, you may need to wait for the other user to release the lock or contact them to resolve the issue.
  
  
  
  Authorization Check:
  
  Verify that you have the necessary authorizations to create or modify networks. You may need to consult with your SAP security team to ensure you have the appropriate roles assigned.
  
  
  
  Use Transaction Codes:
  
  Use transaction codes like CN21 (Create Network) or CN22 (Change Network) to attempt the operation again after ensuring the above conditions are met.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult SAP documentation or your organization's SAP support team for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in the Project System module, such as CJ20N (Project Builder), CN21, CN22, and CN41 (Network Overview).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Consider visiting SAP community forums or user groups for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CN846 error and successfully create or modify the network in SAP.