How To Fix CN804 - Relationship is already being processed

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 804

• Message text: Relationship is already being processed

What causes this issue?

You cannot delete the relationship at this time because it is currently
being edited by another user.

System Response

INCLUDE 'ALLG_CN_VERARB_NICHT_FORTGEF' OBJECT DOKU ID TX

How to fix this error?

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN804 - Relationship is already being processed ?

  The SAP error message CN804 ("Relationship is already being processed") typically occurs in the context of project management or network planning within SAP, particularly when dealing with relationships between activities in a project or network.
  Cause:
  This error usually arises when:
  
  Concurrency Issues: There are multiple processes or transactions trying to access or modify the same relationship simultaneously. This can happen in a multi-user environment where two users are trying to change the same relationship at the same time.
  Locking Mechanism: SAP uses a locking mechanism to prevent data inconsistencies. If a relationship is locked by one user or process, another user trying to access or modify it will encounter this error.
  Incomplete Processing: If a previous transaction involving the relationship was not completed properly, it may still be in a locked state.
  
  Solution:
  To resolve the CN804 error, you can try the following steps:
  
  
  Check for Locks:
  
  Use transaction code SM12 to check for any locks on the relationship. If you find a lock that is no longer needed, you can delete it (if you have the necessary authorizations).
  
  
  
  Wait and Retry:
  
  If the error is due to another user processing the relationship, wait for a moment and then try again. 
  
  
  
  Check for Background Jobs:
  
  Sometimes, background jobs may be processing the same data. Check transaction SM37 to see if there are any jobs that might be affecting the relationship.
  
  
  
  Review Transaction Logs:
  
  Use transaction SLG1 to check the application logs for any related errors or warnings that might give more context to the issue.
  
  
  
  Restart the Transaction:
  
  If you suspect that the transaction is stuck, you can try to exit and restart the transaction.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot identify the cause, it may be necessary to contact SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for locks), SM37 (for job monitoring), and SLG1 (for application logs).
  User Authorizations: Ensure that you have the necessary authorizations to view and manage locks and jobs.
  System Performance: Sometimes, system performance issues can lead to delays in processing, which may cause this error. Monitoring system performance can help identify underlying issues.
  
  By following these steps, you should be able to diagnose and resolve the CN804 error in SAP.