How To Fix RSDHA462 - Detection of erroneous records with same semtantic key not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDHA - HANA Analysis in BW

• Message number: 462

• Message text: Detection of erroneous records with same semtantic key not supported

Self-Explanatory Message

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• What is the cause and solution for SAP error message RSDHA462 - Detection of erroneous records with same semtantic key not supported ?

  The SAP error message RSDHA462, which states "Detection of erroneous records with same semantic key not supported," typically occurs in the context of data extraction or data loading processes in SAP BW (Business Warehouse). This error indicates that there are multiple records in the data source that share the same semantic key, which is not allowed in certain contexts, such as when loading data into InfoProviders.
  Cause:
  The primary cause of this error is the presence of duplicate records in the data source that have the same semantic key. A semantic key is a unique identifier for a record in a data model, and having duplicates violates the integrity of the data model. This can happen due to:
  
  Data Quality Issues: The source system may have duplicate records due to data entry errors or lack of proper data governance.
  Incorrect Data Extraction Logic: The logic used to extract data from the source system may not be filtering or aggregating records correctly.
  Changes in Source Data: If the source data has changed (e.g., new records added or existing records modified) after the last successful load, it may lead to duplicates.
  
  Solution:
  To resolve the RSDHA462 error, you can take the following steps:
  
  
  Identify Duplicate Records:
  
  Analyze the data in the source system to identify records that have the same semantic key. You can use SQL queries or data profiling tools to find duplicates.
  
  
  
  Clean Up Data:
  
  Once duplicates are identified, you need to clean up the data in the source system. This may involve:
  
  Removing duplicates.
  Merging records if they contain complementary information.
  Correcting data entry errors.
  
  
  
  
  
  Adjust Data Extraction Logic:
  
  Review and modify the data extraction logic in your ETL (Extract, Transform, Load) process to ensure that it correctly handles duplicates. This may involve:
  
  Adding filters to exclude duplicates.
  Aggregating data before loading it into BW.
  
  
  
  
  
  Use Data Quality Tools:
  
  Consider implementing data quality tools or processes to prevent duplicates from being created in the future.
  
  
  
  Test the Changes:
  
  After making the necessary changes, test the data extraction and loading process again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Semantic Key: In SAP BW, a semantic key is a combination of fields that uniquely identifies a record in an InfoProvider. It is crucial for maintaining data integrity.
  Data Modeling: Understanding the data model and how semantic keys are defined in your InfoProviders can help prevent such errors.
  SAP Notes: Check SAP Notes and documentation for any specific guidance or patches related to this error message, as SAP may provide updates or best practices for handling such issues.
  
  By following these steps, you should be able to resolve the RSDHA462 error and ensure that your data loading processes run smoothly.