How To Fix RSM021 - & records written in the fact table

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM -

• Message number: 021

• Message text: & records written in the fact table

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSM021 - & records written in the fact table ?

  The SAP error message RSM021 typically relates to issues encountered during the data extraction or loading process in SAP BW (Business Warehouse). This error can occur when there are problems with the data transfer process, particularly when dealing with InfoObjects, InfoProviders, or during the loading of data into fact tables.
  Cause of RSM021 Error
  
  
  Data Transfer Issues: The error may arise due to issues in the data transfer process, such as incorrect data formats, missing data, or inconsistencies in the source data.
  
  
  Data Model Configuration: Misconfiguration in the data model, such as incorrect mappings between source and target fields, can lead to this error.
  
  
  Data Source Problems: If the data source (like an InfoSource or DataSource) is not set up correctly or is inactive, it can cause the error.
  
  
  Data Integrity Issues: If there are integrity issues with the data being loaded (e.g., duplicate records, foreign key violations), this can trigger the error.
  
  
  Authorization Issues: Lack of proper authorizations for the user executing the data load can also lead to this error.
  
  
  Solution to RSM021 Error
  
  
  Check Data Source: Ensure that the data source is active and correctly configured. Verify that the extraction logic is correct and that the data is being pulled as expected.
  
  
  Review Data Formats: Check the data formats in the source system and ensure they match the expected formats in the target InfoObjects.
  
  
  Data Integrity Checks: Perform data integrity checks to identify and resolve any issues with duplicate records or foreign key violations.
  
  
  Monitor Data Load Process: Use transaction codes like RSA1 (Data Warehousing Workbench) to monitor the data load process and identify where the error occurs.
  
  
  Check Authorizations: Ensure that the user executing the data load has the necessary authorizations to perform the operation.
  
  
  Debugging: If the issue persists, consider debugging the data load process to identify the exact point of failure.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Related Information
  
  
  Fact Table Records: When records are written to the fact table, it is essential to ensure that the data is accurate and complete. The fact table typically contains quantitative data for analysis, and any errors during the loading process can lead to incorrect reporting.
  
  
  Data Flow Monitoring: Utilize tools like the Data Flow Monitor in SAP BW to track the status of data loads and identify any bottlenecks or errors.
  
  
  Performance Considerations: If the error is related to performance (e.g., timeouts during data loads), consider optimizing the data load process by adjusting batch sizes or load frequencies.
  
  
  Documentation: Maintain thorough documentation of the data model, data sources, and any custom transformations to facilitate troubleshooting in the future.
  
  
  By following these steps and considerations, you should be able to address the RSM021 error effectively and ensure that records are correctly written to the fact table in SAP BW.