How To Fix SMT070 - Transformation method &1=>&2: Target field &3 already filled with &4

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT -

• Message number: 070

• Message text: Transformation method &1=>&2: Target field &3 already filled with &4

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMT070 - Transformation method &1=>&2: Target field &3 already filled with &4 ?

  The SAP error message SMT070 indicates that during a data transformation process, the target field is already populated with a value, and the system is attempting to fill it again. This typically occurs in the context of data migration or data transfer processes, such as when using the SAP Data Services or SAP S/4HANA Migration Cockpit.
  Cause:
  The error arises when:
  
  The transformation logic is trying to write a value to a target field that already contains data.
  There may be a conflict in the mapping or transformation rules where the same target field is being populated multiple times.
  The data source may have duplicate records or the transformation logic may not be correctly handling existing values.
  
  Solution:
  To resolve the SMT070 error, consider the following steps:
  
  
  Review Transformation Logic:
  
  Check the transformation rules to ensure that the target field is not being populated multiple times. Adjust the logic to prevent overwriting existing values unless intended.
  
  
  
  Check Data Source:
  
  Verify the data source for duplicates or unexpected values that may be causing the target field to be filled before the transformation occurs.
  
  
  
  Modify Target Field Handling:
  
  If the target field should be updated only under certain conditions, implement conditional logic in the transformation to check if the field is already filled before attempting to write to it.
  
  
  
  Use Default Values:
  
  If applicable, set default values for the target field to avoid conflicts when the transformation runs.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific transformation method being used for any additional guidance or known issues.
  
  
  
  Testing:
  
  After making changes, conduct thorough testing to ensure that the transformation works as expected without triggering the error.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Data Migration Tools: Familiarize yourself with the tools being used (e.g., SAP Data Services, SAP S/4HANA Migration Cockpit) and their specific configurations.
  Logs and Traces: Review logs and traces for more detailed information about the error context, which can help in diagnosing the issue.
  
  By following these steps, you should be able to identify the root cause of the SMT070 error and implement a suitable solution.