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

FDT_EXPRESSIONS820 - Overview

• 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

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.

Unfortunately, there isn't any extra information in this error notice.

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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