How To Fix APPL_COMMON026 - Internal error in exactly-once processing (message UUID &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: APPL_COMMON -

• Message number: 026

• Message text: Internal error in exactly-once processing (message UUID &1)

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message APPL_COMMON026 - Internal error in exactly-once processing (message UUID &1) ?

  The SAP error message APPL_COMMON026 indicates an internal error related to the exactly-once processing mechanism in SAP. This error typically arises when there is an issue with the processing of messages in a system that is designed to ensure that messages are processed exactly once, which is crucial for maintaining data integrity and consistency.
  Cause:
  
  Message UUID Issues: The error message includes a UUID (Universally Unique Identifier) that identifies the specific message causing the issue. If the UUID is not recognized or if there are inconsistencies in the message processing state, this can lead to the error.
  System Configuration: Misconfigurations in the system settings related to message processing or transaction handling can trigger this error.
  Database Issues: Problems with the database, such as locks, deadlocks, or corruption, can also lead to this error.
  Network Issues: If there are network interruptions or failures during message processing, it can result in this error.
  Software Bugs: There may be bugs in the SAP software or in custom code that interfere with the message processing logic.
  
  Solution:
  
  Check the UUID: Investigate the specific UUID mentioned in the error message. This can help identify the message or transaction that is causing the issue.
  Review Logs: Check the application logs (transaction SLG1) for more detailed error messages or stack traces that can provide insights into the root cause.
  System Configuration: Review the configuration settings related to message processing and ensure they are set up correctly.
  Database Health: Check the health of the database. Look for locks, deadlocks, or any other issues that might affect message processing.
  Network Stability: Ensure that the network is stable and that there are no interruptions that could affect message delivery.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or updates available that resolve known issues.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for assistance. Provide them with the error message, UUID, and any relevant logs.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SLG1 (Application Log) and SM21 (System Log) to help diagnose the issue.
  Documentation: Review SAP documentation related to message processing and exactly-once semantics to understand the underlying mechanisms.
  Community Forums: Check SAP Community forums or other technical forums for similar issues reported by other users, as they may provide additional insights or solutions.
  
  By following these steps, you should be able to diagnose and potentially resolve the APPL_COMMON026 error in your SAP system.