How To Fix EE_SE_MSG112 - Exactly-once request cannot be locked: &1 (error code &2&3&4)

SAP Error Message - Details

• Message type: E = Error

• Message class: EE_SE_MSG - IS-U Services Enabling Messaged

• Message number: 112

• Message text: Exactly-once request cannot be locked: &1 (error code &2&3&4)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EE_SE_MSG112 - Exactly-once request cannot be locked: &1 (error code &2&3&4) ?

  The SAP error message EE_SE_MSG112, which states "Exactly-once request cannot be locked: &1 (error code &2&3&4)," typically occurs in the context of the SAP Event Management or SAP Process Integration (PI) systems. This error indicates that there is an issue with locking a request that is supposed to be processed exactly once, which is crucial for ensuring data integrity and consistency in transactional systems.
  Cause:
  
  Concurrency Issues: The error often arises when multiple processes attempt to access or lock the same request simultaneously. This can happen in high-load scenarios where multiple instances of a process are trying to handle the same data.
  Database Locking: The underlying database may have a lock on the request due to another transaction that is currently being processed, preventing the current transaction from acquiring the necessary lock.
  Configuration Issues: There may be misconfigurations in the system that affect how locks are managed for exactly-once processing.
  System Performance: If the system is under heavy load or if there are performance issues, it may lead to timeouts or failures in acquiring locks.
  
  Solution:
  
  Check for Concurrent Processes: Investigate if there are multiple instances of the same process running concurrently. If so, consider implementing a mechanism to serialize access to the request.
  Review Lock Entries: Use transaction codes like SM12 (for lock entries) to check if there are existing locks on the request. If you find stale locks, you may need to release them.
  Increase Timeout Settings: If the error is due to timeouts, consider increasing the timeout settings for the relevant processes.
  Optimize Performance: Analyze system performance and optimize any bottlenecks that may be causing delays in processing.
  Configuration Review: Review the configuration settings related to exactly-once processing and locking mechanisms to ensure they are set up correctly.
  Error Handling: Implement error handling in your application logic to gracefully handle situations where a lock cannot be acquired, possibly by retrying the operation after a short delay.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to this error message for any specific patches or updates that may address known issues.
  System Logs: Review system logs (transaction SLG1) for additional context or related error messages that may provide more insight into the issue.
  Documentation: Refer to SAP documentation on exactly-once processing and locking mechanisms for best practices and configuration guidelines.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with detailed logs and context around the error.
  
  By following these steps, you should be able to diagnose and resolve the EE_SE_MSG112 error effectively.