How To Fix /SCWM/SERIAL066 - Delivery items could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/SERIAL -

• Message number: 066

• Message text: Delivery items could not be locked

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/SERIAL066 - Delivery items could not be locked ?

  The SAP error message /SCWM/SERIAL066 indicates that the system was unable to lock delivery items during a process, typically related to warehouse management or handling unit management in SAP Extended Warehouse Management (EWM). This error can occur for various reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  Concurrent Access: Another user or process may be accessing the same delivery items, preventing the system from locking them for your transaction.
  System Performance Issues: High system load or performance issues can lead to timeouts or failures in locking mechanisms.
  Configuration Issues: Incorrect configuration in the warehouse management settings or in the handling unit management can lead to locking issues.
  Database Locks: There may be database locks on the relevant tables that prevent the system from obtaining the necessary locks.
  Incomplete Transactions: Previous transactions that were not completed properly may leave items in a locked state.
  
  Solutions:
  
  Check for Concurrent Users: Verify if other users are working on the same delivery items. If so, coordinate with them to avoid conflicts.
  Retry the Operation: Sometimes, simply retrying the operation after a short wait can resolve the issue, especially if it was caused by a temporary lock.
  Review System Performance: Check the system performance and ensure that there are no bottlenecks. You may need to consult with your IT team to analyze system logs and performance metrics.
  Check for Database Locks: Use transaction codes like SM12 to check for any existing locks on the database tables related to the delivery items. If you find locks that are no longer needed, you may need to release them.
  Review Configuration: Ensure that your warehouse management and handling unit management configurations are set up correctly. Consult with your SAP Basis or EWM consultant if necessary.
  Transaction Monitoring: Use transaction codes like SM21 (System Log) or ST22 (Dump Analysis) to check for any system errors or dumps that might provide more context on the issue.
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or patches that might address this specific error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (Display and Delete Locks), SM21 (System Log), and ST22 (Dump Analysis) for troubleshooting.
  SAP Documentation: Review SAP documentation related to EWM and handling unit management for best practices and configuration guidelines.
  User Roles and Authorizations: Ensure that users have the necessary roles and authorizations to perform the operations on delivery items.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance.