How To Fix RE_APPL_XI_VENUE010 - Exactly-once request cannot be locked: &1 (error code: &2).

SAP Error Message - Details

• Message type: E = Error

• Message class: RE_APPL_XI_VENUE - Venue Reservation Management: Messages for Service Enabling

• Message number: 010

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

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RE_APPL_XI_VENUE010 - Exactly-once request cannot be locked: &1 (error code: &2). ?

  The SAP error message RE_APPL_XI_VENUE010, which states "Exactly-once request cannot be locked: &1 (error code: &2)," typically occurs in the context of SAP's Event Management or similar applications that utilize the "exactly-once" processing model. This error indicates that the system is unable to lock a specific request for processing, which is essential for ensuring that the request is handled exactly once without duplication.
  Cause:
  
  Concurrency Issues: The error often arises when multiple processes or threads attempt to access the same request simultaneously, leading to a locking conflict.
  Database Locking: The underlying database may have a lock on the record that is being accessed, preventing the current process from obtaining the necessary lock.
  Configuration Issues: There may be misconfigurations in the system that affect how locks are managed or released.
  Long-running Transactions: If a transaction takes too long to complete, it may hold onto locks longer than expected, causing other requests to fail.
  
  Solution:
  
  Check for Concurrent Processes: Investigate if there are multiple processes trying to access the same request. If so, ensure that they are designed to handle concurrency properly.
  Review Lock Entries: Use transaction codes like SM12 (for lock entries) to check if there are existing locks on the request. If necessary, you can delete stale locks, but be cautious as this can affect other users.
  Increase Timeout Settings: If the issue is related to long-running transactions, consider increasing the timeout settings for locks in your SAP system.
  Optimize Performance: Review the performance of the transactions involved. If they are taking too long, consider optimizing the code or database queries to reduce execution time.
  System Configuration: Ensure that the system is configured correctly for handling exactly-once processing. This may involve checking settings related to message processing and locking mechanisms.
  Consult SAP Notes: Check the SAP Support Portal for any relevant notes or patches that address this specific error message.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (for lock entries), SM21 (for system logs), and ST22 (for dumps) to diagnose issues.
  SAP Documentation: Review SAP documentation related to Event Management and exactly-once processing for best practices and configuration guidelines.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.