How To Fix WA664 - Check function module &: Parameter & is not optional

WA664 - Overview

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 664

• Message text: Check function module &: Parameter & is not optional

What causes this issue?

The specified parameter of the specified
<DS:GLOS.3526B0B1AFAB52B9E10000009B38F974>check function module</> is
not optional. Since it is not filled when SWE_EVENT_CREATE is called,
this is not allowed.

System Response

The action was aborted and the event was not triggered.

How to fix this error?

Define the specified parameter as optional and assign it a standard
value.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WA664 - Check function module &: Parameter & is not optional ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WA664 Check function module & : Parameter & is not optional
  
  
  Cause:
  This error occurs when a check function module is called with a parameter that is defined as mandatory (not optional) in the function module's interface, but the calling program or process is either not passing this parameter or passing it incorrectly (e.g., passing it as optional or leaving it blank).
  In SAP, check function modules are used to validate data or business logic. Each function module has a defined interface with parameters that can be mandatory or optional. If a mandatory parameter is missing or not supplied correctly, the system raises this error.
  
  Explanation:
  
  
  The message text contains placeholders:
  
  & (first) = Name of the check function module
  & (second) = Name of the parameter that is not optional but was not supplied
  
  
  
  The system expects the calling program to provide all mandatory parameters when