How To Fix FDT_EXPRESSIONS664 - Step with index &1 is not defined

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 664

• Message text: Step with index &1 is not defined

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS664 - Step with index &1 is not defined ?

  The SAP error message FDT_EXPRESSIONS664 with the description "Step with index &1 is not defined" typically occurs in the context of SAP's Flexible Data Import (FDI) or when working with expressions in the context of SAP Fiori or SAP UI5 applications. This error indicates that there is a reference to a step in a process or expression that does not exist or is not defined correctly.
  Causes:
  
  Missing Step Definition: The step referenced by the index does not exist in the defined process or expression.
  Incorrect Index: The index number provided in the error message may be out of range or incorrectly specified.
  Configuration Issues: There may be issues in the configuration of the data import or expression logic that lead to this error.
  Version Mismatch: If there are changes in the underlying data model or process definitions, it may lead to references that are no longer valid.
  
  Solutions:
  
  Check Step Definitions: Review the process or expression definition to ensure that all steps are correctly defined and that the index referenced in the error message corresponds to an existing step.
  Validate Index: Ensure that the index number is within the valid range of defined steps. If the index is too high or negative, it will lead to this error.
  Review Configuration: Go through the configuration settings related to the data import or expression logic to ensure everything is set up correctly.
  Debugging: Use debugging tools available in SAP to trace the execution and identify where the reference to the undefined step is occurring.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific context in which the error occurs.
  Update or Patch: If the issue is related to a known bug, check for any available updates or patches from SAP that may resolve the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates their knowledge base with solutions for common problems.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed and resolved.
  SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.