How To Fix M8101 - System lock error: Inform system administrator

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 101

• Message text: System lock error: Inform system administrator

How to fix this error?

Wait two or three minutes, then repeat what you have just done. If you
receive this message again, 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 M8101 - System lock error: Inform system administrator ?

  The SAP error message M8101, which indicates a "System lock error: Inform system administrator," typically arises when there is a problem with the system's locking mechanism. This can occur in various scenarios, such as during the processing of transactions, updates, or when accessing certain data. Here’s a breakdown of the potential causes, solutions, and related information for this error:
  Causes:
  
  Database Locking Issues: The error may occur if there are issues with database locks, such as deadlocks or contention for resources.
  Transaction Conflicts: If multiple users or processes are trying to access or modify the same data simultaneously, it can lead to locking errors.
  System Configuration: Incorrect configuration settings in the SAP system can lead to locking issues.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other transactions to fail.
  User Authorizations: Insufficient authorizations for users trying to perform certain actions can also lead to this error.
  
  Solutions:
  
  Check Lock Entries: Use transaction code SM12 to check for existing lock entries. You can identify and delete any unnecessary locks that may be causing the issue.
  Analyze Long-running Transactions: Use transaction code SM66 to monitor active processes and identify any long-running transactions that may be holding locks.
  Review System Logs: Check the system logs (transaction SM21) for any related error messages or warnings that could provide more context about the issue.
  Adjust Configuration: Review and adjust any relevant configuration settings that may be contributing to the locking issue.
  User Authorizations: Ensure that users have the necessary authorizations to perform the actions they are attempting.
  Restart the Application Server: In some cases, restarting the application server may help resolve temporary locking issues.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (Lock Entries), SM21 (System Log), and SM66 (Global Work Process Overview) for monitoring and troubleshooting.
  SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, especially if it is affecting multiple users or critical business processes.
  Documentation: Review SAP documentation and community forums for additional insights and solutions shared by other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the M8101 error effectively.