How To Fix SMT034 - Field mappings cannot be combined with transformation methods

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT -

• Message number: 034

• Message text: Field mappings cannot be combined with transformation methods

Self-Explanatory Message

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• What is the cause and solution for SAP error message SMT034 - Field mappings cannot be combined with transformation methods ?

  The SAP error message SMT034, which states "Field mappings cannot be combined with transformation methods," typically occurs in the context of data transformation processes, particularly when using the SAP Data Services or SAP S/4HANA systems. This error indicates that there is a conflict in the way field mappings and transformation methods are being applied in your data flow or transformation logic.
  Cause:
  The error arises when you attempt to use both field mappings and transformation methods in a way that is not allowed. Specifically, this can happen if:
  
  You are trying to apply a transformation method (like a function or calculation) to a field that is already being mapped directly.
  The configuration of the data flow is set up in a way that does not support the combination of these two approaches.
  
  Solution:
  To resolve the SMT034 error, you can take the following steps:
  
  
  Review the Data Flow: Check the data flow or transformation logic where the error occurs. Ensure that you are not trying to apply both field mappings and transformation methods to the same field.
  
  
  Separate Mappings and Transformations:
  
  If you need to perform a transformation on a field, do not map that field directly. Instead, use a transformation method exclusively.
  Conversely, if you are using field mappings, ensure that no transformation methods are applied to those fields.
  
  
  
  Modify the Transformation Logic:
  
  If you need to combine both mappings and transformations, consider restructuring your data flow. You may need to create separate steps or stages in your transformation process to handle mappings and transformations independently.
  
  
  
  Consult Documentation: Refer to the SAP documentation for the specific version you are using. There may be additional guidelines or best practices for handling transformations and mappings.
  
  
  Testing: After making changes, test the data flow to ensure that the error is resolved and that the data is being transformed and mapped correctly.
  
  
  Related Information:
  
  SAP Data Services: If you are using SAP Data Services, familiarize yourself with the concepts of data flows, transformations, and mappings. Understanding how these components interact can help prevent similar errors in the future.
  SAP Community: Consider searching or posting in the SAP Community forums for additional insights or similar experiences from other users.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  By following these steps, you should be able to resolve the SMT034 error and ensure that your data transformation processes work as intended.