How To Fix /ACCGO/CAS_FLLW_MSG331 - Lock during shadow item table read

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/CAS_FLLW_MSG -

• Message number: 331

• Message text: Lock during shadow item table read

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ACCGO/CAS_FLLW_MSG331 - Lock during shadow item table read ?

  The SAP error message /ACCGO/CAS_FLLW_MSG331 Lock during shadow item table read typically indicates that there is a locking issue when trying to access the shadow item table in the context of the SAP Accounting and Financials module. This can occur when multiple processes or users are trying to access the same data simultaneously, leading to a lock contention.
  Cause:
  
  Concurrent Access: Multiple users or processes are trying to read or write to the same shadow item table at the same time.
  Long-running Transactions: A transaction that takes a long time to complete may hold a lock on the table, preventing other transactions from accessing it.
  Database Locking Mechanism: The underlying database may have a locking mechanism that prevents concurrent access to certain records or tables.
  
  Solution:
  
  Wait and Retry: Often, simply waiting for a few moments and then retrying the operation can resolve the issue, as the lock may be released once the other transaction completes.
  Identify and Terminate Long-running Transactions: Use transaction codes like SM12 (to view and manage locks) and SM66 (to monitor global work processes) to identify any long-running transactions that may be holding locks. If necessary, you can terminate these transactions.
  Optimize Processes: Review the processes that are accessing the shadow item table to ensure they are optimized and not holding locks longer than necessary.
  Increase Lock Timeout: If applicable, consider increasing the lock timeout settings in the SAP system to allow longer wait times for locks to be released.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to view locks), SM21 (to check system logs), and ST22 (to analyze dumps) for troubleshooting.
  SAP Basis Team: If the issue persists, it may be necessary to involve your SAP Basis team or SAP support for further investigation and resolution.
  Documentation: Review SAP documentation related to locking mechanisms and performance tuning to better understand how to manage locks in your environment.
  
  By following these steps, you should be able to address the locking issue related to the shadow item table read in SAP.