How To Fix FDT_CORE393 - Invalid recursion: &1 uses &2 uses &3 uses &4 uses &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 393

• Message text: Invalid recursion: &1 uses &2 uses &3 uses &4 uses &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE393 - Invalid recursion: &1 uses &2 uses &3 uses &4 uses &1 ?

  The SAP error message FDT_CORE393 indicates an issue with recursion in the data flow or function calls within the SAP system. Specifically, it suggests that there is a circular reference where an object (like a function, field, or data element) is indirectly or directly referencing itself through a chain of other objects. This can lead to infinite loops or excessive resource consumption, which is why the system raises this error.
  Cause:
  The error occurs when:
  
  A data element or function is defined in such a way that it references another element that eventually leads back to the original element.
  This can happen due to incorrect configuration, such as:
  
  Misconfigured data models.
  Incorrectly defined field mappings.
  Circular dependencies in custom logic or workflows.
  
  
  
  Solution:
  To resolve the FDT_CORE393 error, you can follow these steps:
  
  
  Identify the Circular Reference:
  
  Review the error message details to identify the specific elements involved in the recursion (e.g., &1, &2, &3, &4).
  Trace the references to see how they are interconnected.
  
  
  
  Check Configuration:
  
  Examine the configuration of the data elements, fields, or functions involved.
  Look for any mappings or references that may lead back to the original element.
  
  
  
  Modify the Definitions:
  
  Adjust the definitions to eliminate the circular reference. This may involve:
  
  Redefining the data model.
  Changing field mappings.
  Refactoring custom logic to avoid direct or indirect self-references.
  
  
  
  
  
  Test Changes:
  
  After making changes, test the affected functionality to ensure that the error no longer occurs and that the system behaves as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for additional guidance on specific configurations related to your scenario.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide deeper insights into the specific configuration and help resolve the issue.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on best practices for avoiding recursion in your configurations.
  Debugging Tools: Utilize SAP debugging tools to step through the logic and identify where the recursion is occurring.
  Best Practices: Follow best practices for data modeling and function design to minimize the risk of circular references in the future.
  
  By carefully analyzing the configuration and making the necessary adjustments, you should be able to resolve the FDT_CORE393 error effectively.