How To Fix VO023 - Error locking the deliveries for forming picking waves

SAP Error Message - Details

• Message type: E = Error

• Message class: VO - W&S: Rough workload forecast + picking wave

• Message number: 023

• Message text: Error locking the deliveries for forming picking waves

What causes this issue?

While locking the deliveries for creating picking waves from the local
lock container, a system error or an unforeseen error has occurred.
It is possible that there is a problem with the locl server.

System Response

It is not possible to create picking waves.

How to fix this error?

You have two options:
Try again later to create picking waves.
Please inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VO023 - Error locking the deliveries for forming picking waves ?

  SAP Error Message:
  
  VO023 - Error locking the deliveries for forming picking waves
  
  Cause:
  The error message VO023 typically occurs during the process of creating picking waves in the Warehouse Management (WM) or Extended Warehouse Management (EWM) module. It indicates that SAP was unable to lock the delivery documents that are supposed to be included in the picking wave.
  This locking mechanism is essential to prevent other users or processes from modifying the deliveries while the picking wave is being formed.
  Common causes include:
  
  The deliveries are already locked by another user or process.
  The deliveries are currently being processed in another transaction (e.g., being changed, confirmed, or printed).
  Inconsistent or incomplete delivery data causing the lock to fail.
  System performance issues or database locks that prevent the lock from being set.
  Background jobs or parallel processes trying to access the same deliveries simultaneously.
  
  
  Solution:
  
  
  Check for Locks:
  
  Use transaction SM12 to check for existing locks on the delivery documents.
  Look for locks on tables related to deliveries (e.g., LIPS, LIKP).
  If locks are held by inactive or stuck sessions, consider releasing them carefully after confirming no active process is using them.
  
  
  
  Verify Delivery Status:
  
  Ensure the deliveries are not currently being edited or processed.
  Confirm that no other user or background job is working on these deliveries.
  
  
  
  Retry the Wave Creation:
  
  After ensuring no locks exist, try to create the picking wave again.
  
  
  
  Check for Parallel Processing:
  
  Avoid running multiple wave creation jobs simultaneously that might try to lock the same deliveries.
  Schedule wave creation jobs sequentially if necessary.
  
  
  
  Review Custom Code or Enhancements:
  
  If there are user exits or BAdIs involved in wave creation, check if they cause delays or lock issues.
  
  
  
  System Performance:
  
  If the system is under heavy load, locking might fail due to timeouts.
  Monitor system performance and optimize if needed.
  
  
  
  SAP Notes and Support:
  
  Check SAP Notes for any known bugs or patches related to VO023.
  Example SAP Note: #1234567 (replace with actual note number if available).
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  LT03 - Create Transfer Order (related to picking waves)
  LT24 - Display Transfer Orders by Wave
  SM12 - Display and delete locks
  VL06P - Picking Monitor (to check delivery status)
  
  
  
  Tables:
  
  LIPS - Delivery: Item data
  LIKP - Delivery: Header data
  VTTK - Shipment header data (if shipment involved)
  
  
  
  Process Context:
  
  Picking waves are used to group deliveries for efficient picking.
  Locking deliveries ensures data consistency during wave formation.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Deliveries cannot be locked because they are already locked, being processed, or system issues.
  
  
  Solution
  Check and release locks (SM12), ensure no parallel processing, retry wave creation, check system performance, review custom code.
  
  
  Related
  Transactions LT03, LT24, VL06P; Tables LIPS, LIKP; SAP Notes for patches or fixes.
  
  
  
  
  If the problem persists after these steps, consider raising a support ticket with SAP, providing detailed logs and system information.