How To Fix /SCMUI/RRP_EPP002 - Locking failed; try again later

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMUI/RRP_EPP -

• Message number: 002

• Message text: Locking failed; try again later

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMUI/RRP_EPP002 - Locking failed; try again later ?

  The SAP error message /SCMUI/RRP_EPP002 Locking failed; try again later typically occurs in the context of SAP Advanced Planning and Optimization (APO) or Supply Chain Management (SCM) when there is an issue with data locking. This error indicates that the system is unable to acquire a lock on the required data object, which is necessary for processing certain operations.
  Causes:
  
  Concurrent Access: Another user or process is currently accessing the same data, leading to a lock conflict.
  Long-Running Transactions: A transaction that takes a long time to complete may hold locks longer than expected, preventing other transactions from proceeding.
  System Performance Issues: High system load or performance issues can lead to delays in releasing locks.
  Configuration Issues: Incorrect configuration of locking mechanisms or settings in the system can lead to locking problems.
  Database Issues: Problems with the underlying database, such as deadlocks or contention, can also cause locking failures.
  
  Solutions:
  
  Retry the Operation: Since the error suggests trying again later, simply waiting a few moments and then retrying the operation may resolve the issue if it was caused by temporary contention.
  Check for Active Sessions: Use transaction codes like SM12 (to view and manage locks) to check if there are any active locks on the data you are trying to access. If you find locks that are no longer needed, you may release them (with caution).
  Analyze Long-Running Transactions: Use transaction codes like SM66 (to monitor global work processes) or ST22 (to check for dumps) to identify any long-running transactions that may be holding locks.
  System Performance Monitoring: Monitor system performance and resource utilization to identify any bottlenecks that may be affecting locking behavior.
  Consult Basis Team: If the issue persists, it may be necessary to involve your SAP Basis team to investigate deeper system or database issues.
  Review Configuration: Ensure that the locking configuration in your SAP system is set up correctly and is aligned with best practices.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP documentation related to locking mechanisms in APO/SCM for a better understanding of how locks are managed.
  User Training: Ensure that users are trained on how to properly manage their sessions and avoid long-running transactions that can lead to locking issues.
  
  If the problem continues after trying the above solutions, it may be necessary to escalate the issue to SAP support for further assistance.