How To Fix FKK_EBPP_SERVICE034 - Exactly-once request cannot be locked: &1 (error code &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: FKK_EBPP_SERVICE -

• Message number: 034

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

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FKK_EBPP_SERVICE034 - Exactly-once request cannot be locked: &1 (error code &2) ?

  The SAP error message FKK_EBPP_SERVICE034 indicates that there is an issue with locking a request in the context of the SAP Convergent Charging or SAP Convergent Invoicing processes. The message states that an "exactly-once request cannot be locked," which typically means that the system is trying to process a request that is already being handled or locked by another process.
  Cause:
  
  Concurrency Issues: The error often arises when multiple processes attempt to access or modify the same request simultaneously. This can happen in high-load environments where multiple users or systems are trying to process requests at the same time.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected, causing other requests to fail.
  Database Locking: The underlying database may have locking mechanisms that prevent concurrent access to the same data.
  
  Solution:
  
  Retry the Operation: Often, simply retrying the operation after a short delay can resolve the issue, especially if it was caused by a temporary lock.
  Check for Long-running Transactions: Investigate if there are any long-running transactions that might be holding locks. You can use transaction codes like SM12 (to view locks) and SM66 (to view active processes) to identify and resolve these issues.
  Adjust Locking Mechanisms: If the issue persists, consider reviewing the locking mechanisms in your application. This may involve adjusting the way requests are processed to minimize contention.
  Increase System Resources: If the system is under heavy load, consider scaling up resources or optimizing the processes to handle requests more efficiently.
  Consult SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM12 (to check for locks), SM21 (to view system logs), and ST22 (to check for dumps) for troubleshooting.
  SAP Support: If the issue continues to occur, consider reaching out to SAP Support for further assistance, providing them with the error details and any relevant logs.
  Documentation: Review the SAP documentation related to the specific module you are working with (e.g., SAP Convergent Charging or SAP Convergent Invoicing) for best practices on handling requests and locking.
  
  By following these steps, you should be able to diagnose and resolve the issue related to the FKK_EBPP_SERVICE034 error message.