How To Fix WA661 - Check function module &: Error determining interface

WA661 - Overview

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 661

• Message text: Check function module &: Error determining interface

What causes this issue?

An error occurred when determining the interface of the specified
<DS:GLOS.3526B0B1AFAB52B9E10000009B38F974>check function module</>,
which could not be identified.

System Response

The action was terminated, an event was not triggered.

How to fix this error?

Check the definition of the specified check function module.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WA661 - Check function module &: Error determining interface ?

  The SAP error message:
  WA661 Check function module &: Error determining interface
  typically occurs during the generation or activation of function modules, especially in the context of function group or function module interface changes.
  
  Cause
  This error usually indicates that SAP is unable to determine or find the interface (i.e., the import, export, changing, or tables parameters) of the function module during a consistency check or activation. Possible reasons include:
  
  The function module interface is incomplete or corrupted.
  The function module is referencing an interface that does not exist or is not properly defined.
  There is a mismatch or inconsistency in the function module's interface definition in the ABAP Dictionary.
  Transport or system inconsistencies where the function module or its interface was not properly imported or activated.
  Issues with the function group or the function module's metadata.
  
  
  Solution
  
  
  Check the Function Module Interface:
  
  Go to transaction SE37.
  Enter the function module name.
  Check the Import, Export, Changing, and Tables parameters.
  Ensure all parameters are correctly