How To Fix RSDA181 - Field '&1': Data type changed from '&2' to '&3'

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDA - BW Archiving: Messages

• Message number: 181

• Message text: Field '&1': Data type changed from '&2' to '&3'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDA181 - Field '&1': Data type changed from '&2' to '&3' ?

  The SAP error message RSDA181 indicates that there is a data type mismatch in a DataSource or InfoSource. Specifically, it means that the data type of a field has changed from one type to another, which can lead to issues in data extraction or transformation processes.
  Cause:
  The error typically arises due to one of the following reasons:
  
  Changes in the Source System: The underlying database or source system has changed the data type of a field. For example, a field that was previously defined as a character type may have been changed to a numeric type.
  DataSource or InfoSource Modifications: Changes made to the DataSource or InfoSource in SAP BW (Business Warehouse) can lead to discrepancies in data types.
  Inconsistent Metadata: The metadata in the BW system may not be in sync with the source system, leading to mismatches.
  
  Solution:
  To resolve the RSDA181 error, you can follow these steps:
  
  
  Check the Source System: Verify the data type of the field in the source system. Ensure that it matches the expected data type in the DataSource or InfoSource in SAP BW.
  
  
  Update the DataSource: If the data type has changed in the source system, you may need to update the DataSource in SAP BW:
  
  Go to the DataSource in the SAP BW system.
  Adjust the field definition to match the new data type from the source system.
  Activate the DataSource after making changes.
  
  
  
  Re-activate the InfoSource: If the DataSource is part of an InfoSource, you may also need to re-activate the InfoSource to ensure that it reflects the changes made to the DataSource.
  
  
  Check Transformations: If there are any transformations associated with the DataSource, ensure that they are also updated to handle the new data type correctly.
  
  
  Test Data Extraction: After making the necessary changes, perform a test data extraction to ensure that the error is resolved and that data is being extracted correctly.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error.
  Data Modeling: Familiarize yourself with data modeling concepts in SAP BW, as understanding how DataSources and InfoSources work together can help prevent similar issues in the future.
  Documentation: Review SAP documentation on DataSources and InfoSources for best practices in managing data types and metadata.
  
  By following these steps, you should be able to resolve the RSDA181 error and ensure that your data extraction processes function smoothly.