How To Fix RSDMD291 - Delta handling: Record &1 merged into record &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDMD - Messages for master data

• Message number: 291

• Message text: Delta handling: Record &1 merged into record &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDMD291 - Delta handling: Record &1 merged into record &2 ?

  The SAP error message RSDMD291, which states "Delta handling: Record &1 merged into record &2," typically occurs in the context of data extraction and delta handling in SAP BW (Business Warehouse). This message indicates that during the delta extraction process, two records have been merged, which can happen for various reasons, such as changes in the source data or the way data is structured.
  Cause:
  
  Data Changes: The source data may have undergone changes that resulted in two records being merged. This can happen if the data model allows for merging of records based on certain keys or attributes.
  Data Model Configuration: The configuration of the InfoObject or the data model may allow for merging of records, especially if there are overlapping keys or if the delta mechanism is not properly set up.
  Delta Queue Issues: There may be issues with the delta queue, where records are not being processed correctly, leading to unexpected merging.
  
  Solution:
  
  Check Data Source: Review the source data to understand why the records are being merged. Look for changes in the data that might cause this behavior.
  Review InfoObject Settings: Check the settings of the InfoObjects involved in the delta process. Ensure that the keys and attributes are correctly defined and that they align with the expected behavior of the delta extraction.
  Delta Queue Management: Monitor the delta queue for any inconsistencies or errors. You can use transaction codes like RSA7 to check the delta queue and ensure that it is functioning correctly.
  Reprocess Delta: If necessary, you may need to reprocess the delta or perform a full load to ensure that the data is consistent and that the merging behavior is resolved.
  Consult Documentation: Refer to SAP documentation or notes related to delta handling and merging of records for specific guidance based on your version of SAP BW.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) and RSA7 (Delta Queue Monitor) to manage and monitor your data extraction processes.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Data Modeling: Understanding the data model and how records are structured can help in preventing such issues in the future.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.