How To Fix RSDMD148 - Duplicate data record with key &1&2 found

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDMD - Messages for master data

• Message number: 148

• Message text: Duplicate data record with key &1&2 found

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDMD148 - Duplicate data record with key &1&2 found ?

  The SAP error message RSDMD148, which states "Duplicate data record with key &1&2 found," typically occurs in the context of data modeling or data loading processes in SAP BW (Business Warehouse). This error indicates that there are duplicate entries in the data being processed, which violates the uniqueness constraints defined for the data model.
  Cause:
  
  Duplicate Records: The most common cause of this error is the presence of duplicate records in the data source that you are trying to load into the InfoProvider (e.g., InfoCube, DataStore Object).
  Incorrect Data Source: The data source may be incorrectly configured, leading to the extraction of duplicate records.
  Data Transformation Issues: During the ETL (Extract, Transform, Load) process, transformations may inadvertently create duplicates.
  Key Definition: The key fields defined for the InfoProvider may not be correctly set, leading to conflicts when loading data.
  
  Solution:
  
  
  Identify Duplicates: 
  
  Check the source data for duplicates. You can use SQL queries or data profiling tools to identify duplicate records based on the key fields.
  If you are using a flat file or a database table, you can run a query to count occurrences of each key.
  
  
  
  Data Cleansing:
  
  Remove or consolidate duplicate records in the source data before loading it into SAP BW.
  If duplicates are valid in the source but not in the target, consider implementing logic to aggregate or filter them during the ETL process.
  
  
  
  Adjust Data Load Process:
  
  Review the data load process and transformation rules to ensure they do not create duplicates.
  If using a DataSource, ensure that the extraction logic is correctly configured to avoid pulling in duplicate records.
  
  
  
  Check Key Definitions:
  
  Verify that the key fields in the InfoProvider are correctly defined and that they match the source data structure.
  Ensure that the key fields are unique and that the data model is designed to handle the expected data volume.
  
  
  
  Use Data Quality Tools:
  
  Consider using data quality tools or features within SAP BW to help identify and manage duplicates.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RSDMD148 for any specific patches or updates that may address known issues.
  Data Modeling: Review the data modeling guidelines in SAP BW to ensure best practices are followed.
  ETL Process: Familiarize yourself with the ETL process in SAP BW, including data extraction, transformation, and loading techniques.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the RSDMD148 error and ensure that your data loading processes run smoothly without duplicates.