How To Fix FMCA_PERMIT_ESOA020 - Exactly-once request cannot be locked: &1 (error code &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: FMCA_PERMIT_ESOA - Message Class for Permit Services

• Message number: 020

• 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 FMCA_PERMIT_ESOA020 - Exactly-once request cannot be locked: &1 (error code &2) ?

  The SAP error message FMCA_PERMIT_ESOA020 indicates that there is an issue with locking a request that is supposed to be processed exactly once. This error typically arises in scenarios involving asynchronous processing or when using the SAP Process Integration (PI) or Process Orchestration (PO) frameworks.
  Cause:
  The error message "Exactly-once request cannot be locked" suggests that the system is unable to acquire a lock on a specific request due to one of the following reasons:
  
  Concurrency Issues: Another process or transaction is currently holding a lock on the request, preventing the current process from acquiring it.
  Timeouts: The lock acquisition may be timing out due to long-running processes or deadlocks.
  Configuration Issues: There may be misconfigurations in the system that affect how locks are managed for exactly-once processing.
  Database Issues: Problems with the underlying database, such as contention or performance issues, can also lead to locking problems.
  
  Solution:
  To resolve the FMCA_PERMIT_ESOA020 error, you can take the following steps:
  
  
  Check for Active Locks: Use transaction codes like SM12 to check for existing locks on the request. If you find any locks that are no longer needed, you can release them.
  
  
  Review Process Flow: Analyze the process flow to ensure that there are no long-running transactions that could be holding locks for extended periods. Optimize the process if necessary.
  
  
  Increase Lock Timeout: If the issue is related to timeouts, consider increasing the lock timeout settings in the system configuration.
  
  
  Check Configuration: Review the configuration settings for the relevant components (e.g., PI/PO) to ensure that they are set up correctly for exactly-once processing.
  
  
  Database Performance: Monitor the database performance to identify any bottlenecks or contention issues. Optimize database queries or consider indexing if necessary.
  
  
  Error Handling: Implement error handling in your process to gracefully manage situations where locks cannot be acquired, such as retrying the request after a short delay.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error.
  
  
  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 exactly-once processing and locking mechanisms in SAP PI/PO.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have implemented.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.