How To Fix RSAU291 - The source system is filled from the communication structure

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAU - Update rules

• Message number: 291

• Message text: The source system is filled from the communication structure

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAU291 - The source system is filled from the communication structure ?

  The SAP error message RSAU291 indicates that there is an issue with the data extraction process from a source system, specifically related to the communication structure. This error typically occurs in the context of SAP BW (Business Warehouse) when trying to extract data from a source system, such as an SAP ERP system.
  Cause:
  The error message "RSAU291 The source system is filled from the communication structure" usually arises due to one of the following reasons:
  
  Data Transfer Issues: The data transfer from the source system to the BW system may not be configured correctly, or there may be issues with the data itself.
  Communication Structure Not Populated: The communication structure (often a DataSource) may not be populated with data, which means that the extraction process cannot proceed.
  Delta Queue Issues: If you are using delta extraction, there may be issues with the delta queue that prevent data from being extracted.
  Incorrect Settings: The settings in the DataSource or InfoPackage may not be configured correctly, leading to this error.
  
  Solution:
  To resolve the RSAU291 error, you can follow these steps:
  
  
  Check DataSource Configuration:
  
  Ensure that the DataSource is correctly configured in the source system.
  Verify that the communication structure is correctly defined and that it matches the data model in the source system.
  
  
  
  Check for Data in the Source System:
  
  Verify that there is data available in the source system that can be extracted. You can do this by checking the relevant tables or transaction codes in the source system.
  
  
  
  Monitor the Delta Queue:
  
  If you are using delta extraction, check the delta queue for any issues. You can use transaction codes like RSA7 to monitor the delta queue and ensure that it is being populated correctly.
  
  
  
  Reinitialize the DataSource:
  
  If necessary, you may need to reinitialize the DataSource. This involves deleting the existing data in the BW system and reloading it from the source system.
  
  
  
  Check InfoPackage Settings:
  
  Review the settings of the InfoPackage that is used for the extraction. Ensure that it is set up correctly and that it is pointing to the correct DataSource.
  
  
  
  Check for Errors in the Source System:
  
  Look for any error messages or logs in the source system that may indicate issues with the data extraction process.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates that can resolve the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSA7 (Delta Queue Monitor), and RSMO (Monitor Data Transfer).
  Documentation: Review SAP documentation related to data extraction and BW configuration for best practices and troubleshooting steps.
  SAP Community: Engage with the SAP Community forums for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the RSAU291 error in your SAP BW environment.