How To Fix UCL2025 - Cannot determine the source data structure for the log data

SAP Error Message - Details

• Message type: E = Error

• Message class: UCL2 - Messages for Audit Trail Definition

• Message number: 025

• Message text: Cannot determine the source data structure for the log data

What causes this issue?

The log displays the source data structure. However, this source data
structure cannot be determined correctly.

System Response

The log cannot be saved.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UCL2025 - Cannot determine the source data structure for the log data ?

  The SAP error message UCL2025, which states "Cannot determine the source data structure for the log data," typically occurs in the context of data extraction or data processing within SAP systems, particularly when dealing with data logging or data transfer processes.
  Cause:
  
  
  Missing or Incorrect Configuration: The source data structure may not be properly configured in the system. This could be due to missing entries in the relevant configuration tables or incorrect settings in the data source definition.
  
  
  Data Source Not Active: The data source from which the log data is being extracted may not be active or may have been deactivated.
  
  
  Inconsistent Data Model: Changes in the underlying data model (e.g., changes in the database structure or data source) that are not reflected in the log data configuration can lead to this error.
  
  
  Authorization Issues: Lack of proper authorizations to access the data source or log data can also trigger this error.
  
  
  Technical Issues: There may be technical issues such as system inconsistencies, missing transport requests, or issues with the data extraction process.
  
  
  Solution:
  
  
  Check Configuration: Verify the configuration of the data source in the SAP system. Ensure that the source data structure is correctly defined and active.
  
  
  Activate Data Source: If the data source is inactive, activate it in the relevant transaction (e.g., RSA5 for data sources).
  
  
  Review Data Model Changes: If there have been recent changes to the data model, ensure that all related configurations are updated accordingly.
  
  
  Check Authorizations: Ensure that the user has the necessary authorizations to access the data source and log data.
  
  
  Debugging: If the issue persists, consider debugging the process to identify where the error is occurring. This may involve checking the logs or using transaction codes like SLG1 to view application logs.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific data source or extraction process for additional troubleshooting steps.
  
  
  Contact SAP Support: If the issue cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSA5 (Data Source Activation), and SLG1 (Application Log).
  SAP Notes: Search for SAP Notes related to UCL2025 or the specific data source you are working with for any known issues or patches.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to diagnose and resolve the UCL2025 error in your SAP system.