How To Fix RSDHA408 - Mapping for input column '&1' missing

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDHA - HANA Analysis in BW

• Message number: 408

• Message text: Mapping for input column '&1' missing

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDHA408 - Mapping for input column '&1' missing ?

  The SAP error message RSDHA408, which states "Mapping for input column '&1' missing," typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with the mapping of input columns in a transformation or data flow. This error indicates that the system cannot find a corresponding mapping for a specific input column in the transformation rules.
  Cause:
  
  Missing Mapping: The input column specified in the error message does not have a corresponding mapping defined in the transformation.
  Incorrect Column Name: The column name may be misspelled or does not match the expected name in the source data.
  Transformation Configuration: The transformation might not be properly configured, or the source structure has changed, leading to missing mappings.
  Data Source Changes: If the underlying data source has been modified (e.g., columns added, removed, or renamed), the transformation may not reflect these changes.
  
  Solution:
  
  
  Check Transformation Settings:
  
  Go to the transformation that is causing the error and verify the mapping for the input columns.
  Ensure that the input column mentioned in the error message is correctly mapped to the target field.
  
  
  
  Update Mapping:
  
  If the input column is missing, you may need to add a new mapping for it.
  If the column name has changed, update the mapping to reflect the new name.
  
  
  
  Validate Source Structure:
  
  Check the structure of the source data (e.g., InfoSource, DataSource) to ensure that it matches the expected structure in the transformation.
  If there are discrepancies, adjust the transformation accordingly.
  
  
  
  Re-activate Transformation:
  
  After making changes, re-activate the transformation to ensure that the changes take effect.
  
  
  
  Test the Data Load:
  
  After making the necessary adjustments, run a test data load to verify that the error has been resolved.
  
  
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to access the transformation and check mappings.
  Documentation: Refer to SAP documentation for detailed guidance on transformations and data mapping.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  By following these steps, you should be able to resolve the RSDHA408 error and ensure that your data transformation processes work correctly.