How To Fix CN721 - You cannot delete: A relationship is currently locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 721

• Message text: You cannot delete: A relationship is currently locked

What causes this issue?

You cannot delete the activity at this time. Another network
or standard network that is connected via a relationship to this
activity is currently being edited.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Wait until the editing of the other network or standard network is
finished. Then you can delete the activity and its relationship.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN721 - You cannot delete: A relationship is currently locked ?

  The SAP error message CN721, which states "You cannot delete: A relationship is currently locked," typically occurs in the context of project management or network planning within SAP. This error indicates that the system is preventing the deletion of a relationship (such as a dependency between tasks or activities) because it is currently locked, likely due to ongoing processes or transactions.
  Causes:
  
  Active Transactions: The relationship may be locked because there are active transactions or processes that are currently using it.
  User Lock: Another user may have locked the relationship for editing or processing.
  Background Jobs: A background job might be running that is using the relationship, preventing any changes.
  System Lock: The system may have a lock in place due to a previous operation that did not complete successfully.
  
  Solutions:
  
  
  Check for Active Processes: Verify if there are any active processes or transactions that are using the relationship. You can do this by checking the transaction logs or using transaction codes like SM12 (to check for locks) or SM37 (to check background jobs).
  
  
  Release Locks: If you identify that a user or a process is holding a lock, you may need to wait for it to complete or, if appropriate, ask the user to release the lock.
  
  
  Use Transaction SM12: You can use transaction SM12 to view and delete user locks if you have the necessary authorizations. Be cautious when doing this, as it may affect other users.
  
  
  Check Background Jobs: Use transaction SM37 to check if there are any background jobs that might be locking the relationship. If you find any, you may need to wait for them to finish or cancel them if they are stuck.
  
  
  Consult with Basis Team: If you are unable to resolve the issue, it may be necessary to consult with your SAP Basis team or system administrator for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN22 (to manage relationships), SM12 (to check locks), and SM37 (to monitor background jobs).
  User Authorizations: Ensure that you have the necessary authorizations to view and manage locks and relationships.
  Documentation: Refer to SAP documentation or help resources for more detailed information on managing project relationships and handling locks.
  
  By following these steps, you should be able to identify the cause of the CN721 error and take appropriate action to resolve it.