How To Fix CN646 - Delivery info &2 is being processed by &1. (Display only)

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 646

• Message text: Delivery info &2 is being processed by &1. (Display only)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN646 - Delivery info &2 is being processed by &1. (Display only) ?

  The SAP error message CN646 indicates that a delivery information record (in this case, identified by &2) is currently being processed by another user or session (identified by &1). This typically occurs in the context of the SAP Project System (PS) or related modules where multiple users may attempt to access or modify the same data simultaneously.
  Cause:
  
  Concurrent Access: Another user is currently editing or processing the delivery information, which locks the record for editing to prevent data inconsistencies.
  Long-running Transactions: A transaction may be taking longer than expected, causing the record to remain locked for an extended period.
  System Configuration: The system may be configured to allow only one user to edit certain records at a time.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to finish processing the record. You can periodically check if the lock has been released.
  Check User Sessions: If you have access, you can check the system for active sessions using transaction codes like SM04 (User Overview) or SM12 (Lock Entries) to see who is currently using the record.
  Contact the User: If you can identify the user who is processing the record, you may reach out to them to see if they can complete their task more quickly.
  System Administrator Intervention: If the lock persists and you cannot identify the user, you may need to contact your system administrator. They can investigate further and, if necessary, release the lock.
  Review System Settings: If this issue occurs frequently, it may be worth reviewing the system settings and configurations related to locking mechanisms to see if adjustments can be made.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM04 (to view active users) and SM12 (to view and manage lock entries).
  User Training: Ensure that users are trained on how to properly exit transactions to avoid leaving records locked unintentionally.
  Performance Monitoring: Monitor system performance to identify any long-running transactions that may be causing locks.
  Documentation: Refer to SAP documentation or support notes for additional insights into handling locking issues and best practices for concurrent access.
  
  By following these steps, you should be able to address the CN646 error message effectively.