How To Fix EA385 - Incorrect interface of function module

SAP Error Message - Details

• Message type: E = Error

• Message class: EA - IDoc Basis Messages

• Message number: 385

• Message text: Incorrect interface of function module

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EA385 - Incorrect interface of function module ?

  The SAP error message EA385, which states "Incorrect interface of function module," typically occurs when there is a mismatch between the expected interface of a function module and the actual interface being used in the calling program or another function module. This can happen for several reasons, including changes in the function module's definition, incorrect parameter passing, or versioning issues.
  Causes:
  
  Parameter Mismatch: The calling program is passing parameters that do not match the expected parameters of the function module (e.g., wrong data types, missing parameters).
  Changes in Function Module: The function module may have been modified (e.g., parameters added or removed) after the calling program was developed.
  Versioning Issues: If the function module is part of a transport request that has not been imported into the target system, the calling program may be referencing an outdated version of the function module.
  Namespace Issues: If the function module is in a different namespace and the calling program does not have access to it, this error may occur.
  
  Solutions:
  
  Check Function Module Definition: Review the definition of the function module in transaction SE37 or SE80 to ensure that the parameters being passed from the calling program match the expected parameters.
  Update Calling Program: If the function module has been changed, update the calling program to align with the new interface. This may involve adding or modifying parameters.
  Transport Consistency: Ensure that all relevant transport requests have been imported into the target system. If the function module was recently changed, make sure the latest version is available.
  Debugging: Use the debugger to step through the code and identify where the mismatch occurs. This can help pinpoint the exact parameters causing the issue.
  Check for Namespace Issues: If the function module is in a different namespace, ensure that the calling program has the necessary authorizations and access to call the function module.
  
  Related Information:
  
  Transaction Codes: Use SE37 to view and edit function modules, and SE80 for broader object management.
  Documentation: Check the documentation for the function module to understand its intended use and parameter requirements.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues or provide additional guidance on this error.
  Community Forums: Consider checking SAP Community forums or other developer forums for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify and resolve the cause of the EA385 error in your SAP environment.