How To Fix /DSD/VC_MESSAGE401 - Visit list &1 is being processed by &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /DSD/VC_MESSAGE -

• Message number: 401

• Message text: Visit list &1 is being processed by &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /DSD/VC_MESSAGE401 - Visit list &1 is being processed by &2 ?

  The SAP error message /DSD/VC_MESSAGE401 indicates that a visit list (in this case, identified by &1) is currently being processed by another user or session (identified by &2). This typically occurs in the context of the SAP Direct Store Delivery (DSD) module, where multiple users may attempt to access or modify the same visit list simultaneously.
  Cause:
  
  Concurrent Access: The primary cause of this error is that the visit list is locked by another user or session. This can happen if one user is currently editing or processing the visit list while another user tries to access it.
  Session Timeout: If a user has left a session open for an extended period, the system may still consider that session as active, leading to a lock on the visit list.
  System Configuration: Certain configurations in the SAP system may lead to stricter locking mechanisms, causing more frequent occurrences of this error.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to finish processing the visit list and then try again. You can check with your colleagues to see if they are currently using the visit list.
  Check Locks: Use transaction code SM12 to check for locks on the visit list. You can see which user is holding the lock and, if appropriate, request them to release it.
  Session Management: Ensure that users are properly logging out of sessions when they are done. This can help prevent unnecessary locks.
  Contact Support: If the issue persists and you cannot identify the user holding the lock, it may be necessary to contact your SAP support team for assistance. They can help identify the cause and potentially release the lock if needed.
  Review Configuration: If this error occurs frequently, it may be worth reviewing the system configuration related to locking mechanisms to see if adjustments can be made to reduce conflicts.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) for troubleshooting.
  User Communication: Establish a protocol for users to communicate when they are working on specific visit lists to minimize conflicts.
  Documentation: Review SAP documentation related to the DSD module for best practices on managing visit lists and understanding locking behavior.
  
  By following these steps, you should be able to resolve the error and minimize its occurrence in the future.