How To Fix ANWENDUNGSYSSWITCH104 - PP transactions NOT unlocked

SAP Error Message - Details

• Message type: E = Error

• Message class: ANWENDUNGSYSSWITCH - Messages about System Switch - Application

• Message number: 104

• Message text: PP transactions NOT unlocked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ANWENDUNGSYSSWITCH104 - PP transactions NOT unlocked ?

  The SAP error message "ANWENDUNGSYSSWITCH104 PP transactions NOT unlocked" typically indicates that there is a problem with the locking mechanism in the SAP system, specifically related to the Production Planning (PP) module. This error can occur when transactions are not properly unlocked, preventing users from executing certain actions in the system.
  Cause:
  
  Unfinished Transactions: If a user has an open session or transaction that has not been completed, it may lead to locks that prevent other users from accessing the same data.
  System Errors: Technical issues or system errors can cause transactions to remain locked.
  User Session Issues: If a user’s session is terminated unexpectedly (e.g., due to network issues), it may leave locks in place.
  Database Locks: Locks at the database level can also cause this issue, especially if there are long-running transactions.
  
  Solution:
  
  
  Check for Active Sessions: Use transaction code SM12 to check for active locks. You can identify the user and the transaction that is causing the lock.
  
  If you find a lock that is no longer needed, you can delete it (if you have the necessary authorizations).
  
  
  
  Transaction Monitoring: Use transaction code SM21 to check the system log for any errors or warnings that might indicate why the transactions are locked.
  
  
  Restart the Transaction: If the issue is due to a user session, ask the user to log out and log back in to clear any session-related locks.
  
  
  System Restart: In some cases, a system restart may be necessary to clear persistent locks, but this should be done with caution and typically requires coordination with your SAP Basis team.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, it may be necessary to contact SAP support for further assistance.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM21: System log.
  SM37: Job monitoring, to check if any background jobs are causing locks.
  
  
  
  User Authorizations: Ensure that users have the necessary authorizations to unlock transactions and manage locks.
  
  
  Documentation: Review SAP notes and documentation related to locking mechanisms in the PP module for any specific guidance or known issues.
  
  
  Preventive Measures: Implement best practices for transaction handling and user session management to minimize the occurrence of such locks in the future.
  
  
  By following these steps, you should be able to resolve the "ANWENDUNGSYSSWITCH104 PP transactions NOT unlocked" error and restore normal functionality in the SAP system.