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

FDT_EXPRESSIONS664 - Overview

• 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

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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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Mismatch: If there are changes in the underlying data model or process definitions, it may lead to references that are no longer valid.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