How To Fix FDT_EXPRESSIONS820 - Invalid procedure call: Neither method nor function module provided

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 820

• Message text: Invalid procedure call: Neither method nor function module provided

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS820 - Invalid procedure call: Neither method nor function module provided ?

  The SAP error message FDT_EXPRESSIONS820 ("Invalid procedure call: Neither method nor function module provided") typically occurs in the context of using the SAP Fiori or SAP S/4HANA applications that utilize the FDT (Form Data Tool) framework. This error indicates that a procedure call is being made without a valid method or function module being specified.
  Causes:
  
  Missing Function Module/Method: The error often arises when a function module or method that is expected to be called is not defined or is incorrectly referenced in the configuration.
  Incorrect Configuration: There may be an issue with the configuration of the FDT expressions or the way the data is being processed.
  Transport Issues: If the application was recently transported from one system to another, there may be missing dependencies or objects.
  Version Compatibility: The error could also be due to compatibility issues between different versions of SAP components or custom developments.
  
  Solutions:
  
  Check Configuration: Review the configuration settings in the FDT to ensure that all required function modules or methods are correctly defined and available.
  Validate Function Modules: Ensure that the function modules or methods being called exist in the system and are active. You can check this in transaction SE37 (for function modules) or SE80 (for methods).
  Debugging: Use the debugger to trace the execution and identify where the call is failing. This can help pinpoint the exact location and reason for the error.
  Review Transport Requests: If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and transported correctly.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this can resolve known issues.
  Consult Documentation: Refer to SAP Notes and documentation related to FDT and the specific application you are working with for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional context.
  FDT Documentation: Review the official SAP documentation for the Form Data Tool to understand its configuration and usage better.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.