How To Fix FDT_EXPRESSIONS659 - Target step &1 for mapping is not defined in sequence

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 659

• Message text: Target step &1 for mapping is not defined in sequence

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS659 - Target step &1 for mapping is not defined in sequence ?

  The SAP error message FDT_EXPRESSIONS659 indicates that there is an issue with the mapping configuration in your SAP Data Services or SAP Process Integration (PI) environment. Specifically, the error states that the target step (denoted as &1) for a mapping is not defined in the sequence. This typically occurs when the mapping logic is trying to reference a target step that has not been properly defined or is missing in the sequence of steps.
  Cause:
  
  Missing Target Step: The target step that the mapping is trying to reference does not exist in the defined sequence.
  Incorrect Mapping Configuration: There may be a misconfiguration in the mapping logic where the target step is either misspelled or incorrectly referenced.
  Changes in Mapping: If the mapping was modified (e.g., steps were added, removed, or renamed), it could lead to inconsistencies.
  Versioning Issues: If there are multiple versions of the mapping, the one being executed may not match the defined sequence.
  
  Solution:
  
  
  Check Mapping Configuration:
  
  Open the mapping configuration in the SAP Data Services or PI tool.
  Verify that the target step referenced in the error message is defined in the sequence of steps.
  Ensure that all steps are correctly named and referenced.
  
  
  
  Define Missing Steps:
  
  If the target step is indeed missing, you will need to define it in the mapping sequence.
  Add the necessary logic or transformation to create the target step.
  
  
  
  Review Changes:
  
  If changes were made to the mapping, review those changes to ensure that all references are still valid.
  If necessary, revert to a previous version of the mapping that was working correctly.
  
  
  
  Test the Mapping:
  
  After making the necessary adjustments, test the mapping to ensure that it executes without errors.
  Validate the output to confirm that the mapping logic is functioning as intended.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for additional guidance on mapping configurations and common issues.
  
  
  
  Related Information:
  
  SAP Data Services Documentation: Check the official SAP documentation for detailed information on mapping configurations and error handling.
  SAP Community: Engage with the SAP community forums to see if others have encountered similar issues and how they resolved them.
  Debugging Tools: Utilize debugging tools available in SAP Data Services or PI to trace the execution of the mapping and identify where the issue occurs.
  
  By following these steps, you should be able to resolve the error message FDT_EXPRESSIONS659 and ensure that your mapping is correctly configured.