How To Fix RSEC801 - Change log is not complete

SAP Error Message - Details

• Message type: E = Error

• Message class: RSEC -

• Message number: 801

• Message text: Change log is not complete

What causes this issue?

The attempt to restore an earlier version has failed because the change
log is not complete.
Changes were made before &V1&, which cannot be reconstructed due to
missing entries.

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

System Response

The version cannot be restored.

How to fix this error?

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 RSEC801 - Change log is not complete ?

  The SAP error message RSEC801, which states "Change log is not complete," typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when there are issues with the change log data that is used for delta loads or data extraction processes. This error can prevent data from being successfully loaded or processed.
  Causes:
  
  Incomplete Change Log: The change log may not have been fully populated due to issues during data extraction or loading processes.
  Data Source Issues: The data source from which the change log is being generated may have inconsistencies or missing records.
  Delta Queue Issues: If the delta queue is not properly maintained or if there are issues with the delta mechanism, it can lead to incomplete change logs.
  System Configuration: Incorrect configuration settings in the data source or in the BW system can lead to this error.
  Data Deletion: If records in the change log have been deleted or if the change log has been reset, it can lead to this error.
  
  Solutions:
  
  Check Change Log: Verify the change log for the relevant data source to ensure that it is complete and contains all necessary records.
  Reinitialize the Data Source: If the change log is indeed incomplete, you may need to reinitialize the data source. This involves deleting the existing data in the InfoProvider and reloading it from the source system.
  Check Delta Queue: Ensure that the delta queue is functioning correctly. You can use transaction codes like RSA7 to monitor the delta queue and check for any inconsistencies.
  Data Source Settings: Review the settings of the data source in the SAP BW system to ensure that they are correctly configured for delta loads.
  Monitor Data Load Processes: Check the logs of the data load processes to identify any errors or warnings that may indicate why the change log is incomplete.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes such as RSA1 (Data Warehousing Workbench), RSA7 (Delta Queue Monitor), and RSC3 (Change Log Monitor) to help diagnose and resolve issues.
  SAP Documentation: Refer to SAP Help documentation for detailed information on data extraction, delta processes, and change log management.
  SAP Community: Engage with the SAP Community forums to seek advice from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to involve your SAP Basis or BW support team for further investigation.