How To Fix RSDL126 - Field name &1 of object &2 in DB system has been changed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDL - BW DB Connect

• Message number: 126

• Message text: Field name &1 of object &2 in DB system has been changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDL126 - Field name &1 of object &2 in DB system has been changed ?

  The SAP error message RSDL126 indicates that a field name in a database object has been changed, which can lead to issues in data extraction or reporting processes. This error typically arises in the context of SAP BW (Business Warehouse) or SAP HANA when there are inconsistencies between the data model and the underlying database schema.
  Cause:
  
  
  Database Schema Changes: The most common cause of this error is that the underlying database schema has been modified. This could happen due to:
  
  Changes made directly in the database (e.g., renaming fields, altering tables).
  Updates or modifications in the data source or InfoProvider in SAP BW.
  Changes in the data model due to transport requests or system upgrades.
  
  
  
  Inconsistent Metadata: The metadata in the SAP BW system may not be in sync with the actual database structure, leading to discrepancies.
  
  
  Solution:
  To resolve the RSDL126 error, you can follow these steps:
  
  
  Check the Database Schema: Verify the current structure of the database object (table/view) in the database. Ensure that the field names and types match what is expected in the SAP BW system.
  
  
  Update DataSource: If the field name has changed, you may need to update the DataSource in SAP BW:
  
  Go to the DataSource in the SAP BW system.
  Use the "Change DataSource" option to refresh the metadata.
  Adjust the field mappings if necessary.
  
  
  
  Re-activate the DataSource: After making changes, re-activate the DataSource to ensure that the changes are reflected in the BW system.
  
  
  Check InfoObjects: If the field is part of an InfoObject, ensure that the InfoObject definition is updated to reflect the changes in the database.
  
  
  Transport Requests: If the changes were made in a development environment, ensure that the transport requests are correctly moved to the production environment.
  
  
  Data Load: After making the necessary adjustments, perform a test data load to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error.
  Transaction Codes: Familiarize yourself with transaction codes such as RSA1 (Data Warehousing Workbench) and RSO2 (DataSource Maintenance) for managing DataSources and InfoProviders.
  Documentation: Review SAP documentation regarding data modeling and extraction processes to understand best practices and avoid similar issues in the future.
  
  By following these steps, you should be able to resolve the RSDL126 error and ensure that your SAP BW system is functioning correctly with the updated database schema.