How To Fix RSBK124 - Delta not possible. Field &1 is not used in transformation &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBK - Messages for the Data Transfer Process

• Message number: 124

• Message text: Delta not possible. Field &1 is not used in transformation &2.

Self-Explanatory Message

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• What is the cause and solution for SAP error message RSBK124 - Delta not possible. Field &1 is not used in transformation &2. ?

  The SAP error message RSBK124 indicates that a delta update is not possible because a specific field (denoted as &1) is not used in the transformation (denoted as &2). This typically occurs in the context of data extraction and transformation processes in SAP BW (Business Warehouse) when working with InfoProviders and DataSources.
  Cause:
  
  Field Not Mapped: The field mentioned in the error message is not included in the transformation rules for the specified DataSource. This means that the system does not know how to handle this field during the delta extraction process.
  Transformation Configuration: The transformation might not be correctly configured to handle the delta load for the specified field.
  DataSource Changes: If the DataSource has been modified (e.g., fields added or removed) after the transformation was created, it may lead to inconsistencies.
  Delta Mechanism: The delta mechanism relies on specific fields to track changes. If a required field is missing from the transformation, the delta process cannot proceed.
  
  Solution:
  
  Check Transformation: Go to the transformation for the specified DataSource and ensure that the field mentioned in the error message is included in the mapping. If it is not, you will need to add it.
  Update Transformation: If the field is required for delta processing, update the transformation to include it. Make sure to map it correctly to the target InfoObject.
  Activate Transformation: After making changes, activate the transformation to ensure that the changes take effect.
  Check DataSource: Verify the DataSource configuration to ensure that it is set up correctly and that all necessary fields are included.
  Re-run Delta Load: After making the necessary adjustments, attempt to re-run the delta load to see if the issue is resolved.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to access the transformation and DataSource settings.
  Documentation: Refer to SAP Help documentation for detailed guidance on configuring transformations and DataSources.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional troubleshooting steps related to this error message.
  Testing: After making changes, it is advisable to test the delta load in a development or test environment before applying changes to production.
  
  By following these steps, you should be able to resolve the RSBK124 error and successfully perform the delta update.