How To Fix /SCWM/SHP_RCV394 - Wait &1 seconds to lock object '&2' again

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/SHP_RCV -

• Message number: 394

• Message text: Wait &1 seconds to lock object '&2' again

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/SHP_RCV394 - Wait &1 seconds to lock object '&2' again ?

  The SAP error message /SCWM/SHP_RCV394 typically indicates that a process is trying to lock an object (like a warehouse task or a stock transfer) but is unable to do so because another process currently holds the lock. This is a common issue in systems where multiple processes or users are trying to access the same resources simultaneously.
  Cause:
  
  Concurrent Access: The most common cause of this error is that multiple users or processes are trying to access or modify the same object at the same time.
  Long-Running Transactions: If a transaction takes too long to complete, it can hold a lock on an object longer than expected, causing other transactions to wait.
  Deadlocks: In some cases, a deadlock situation may arise where two or more processes are waiting for each other to release locks.
  
  Solution:
  
  Wait and Retry: The error message suggests waiting for a specified number of seconds before trying to lock the object again. This is often the simplest solution.
  Check for Long-Running Processes: Use transaction codes like SM50 or SM66 to monitor active processes and identify any long-running transactions that may be holding locks.
  Optimize Processes: Review and optimize the processes that are causing locks. This may involve breaking down large transactions into smaller ones or improving the efficiency of the processes.
  Lock Management: If you have control over the processes, consider implementing better lock management strategies to minimize contention.
  System Configuration: In some cases, adjusting system parameters related to locking and concurrency may help. Consult with your SAP Basis team for potential adjustments.
  Error Handling in Custom Code: If you have custom code that interacts with the warehouse management system, ensure that it properly handles locking scenarios and retries as necessary.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SM12 (to view and manage locks) and SM21 (to check system logs) for further investigation.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation on warehouse management and locking mechanisms for more insights into how locks are managed in the system.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance.