How To Fix BUPA_ESOA028 - Exactly-once request cannot be locked: &1 (error code: &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: BUPA_ESOA - Message Class for Business Partner Services

• Message number: 028

• 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 BUPA_ESOA028 - Exactly-once request cannot be locked: &1 (error code: &2) ?

  The SAP error message BUPA_ESOA028 indicates that there is an issue with locking a request in the context of an "exactly-once" processing scenario. This typically occurs in scenarios where a request is expected to be processed exactly once, and the system is unable to lock the request due to some underlying issue.
  Cause:
  
  Concurrency Issues: The error often arises when multiple processes are trying to access or modify the same data simultaneously, leading to a locking conflict.
  Database Locking: The database might have a lock on the record that is being accessed, preventing the current transaction from acquiring the necessary lock.
  Long-running Transactions: If a previous transaction is taking too long to complete, it may hold onto locks longer than expected, causing subsequent requests to fail.
  Configuration Issues: There may be configuration settings in the system that are not aligned with the expected behavior for exactly-once processing.
  
  Solution:
  
  Check for Locks: Use transaction codes like SM12 to check for existing locks on the relevant database tables. If you find locks that are no longer needed, you can release them.
  Review Long-running Transactions: Identify any long-running transactions that may be holding locks and optimize them if possible.
  Retry Logic: Implement retry logic in your application to handle transient locking issues. This can help in scenarios where the lock is temporarily held by another process.
  Adjust Configuration: Review the configuration settings related to exactly-once processing and locking mechanisms to ensure they are set correctly.
  System Performance: Monitor system performance to ensure that it is not overloaded, which can lead to increased locking issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM21 (System Log), ST22 (Dump Analysis), and SLG1 (Application Log) to gather more information about the error context.
  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 on exactly-once processing and locking mechanisms to understand the expected behavior and best practices.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support for further assistance.