How To Fix WA674 - Receiver type determination func. mod. &: Parameter & is not optional

SAP Error Message - Details

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 674

• Message text: Receiver type determination func. mod. &: Parameter & is not optional

What causes this issue?

The specified parameter of the specified function module for
determining the receiver type is not optional. Since it is not filled
when SWE_EVENT_CREATE is called, this is not allowed.

System Response

The action was terminated, 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 WA674 - Receiver type determination func. mod. &: Parameter & is not optional ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WA674 Receiver type determination func. mod. &: Parameter & is not optional
  
  Meaning / Cause:
  This error occurs during the processing of a workflow or message determination where a function module is used to determine the receiver type. The function module expects certain parameters to be passed, but one or more parameters that are mandatory (not optional) are missing or not provided.
  Specifically, the message indicates that in the function module used for receiver type determination, a parameter (denoted by &) which is mandatory has not been supplied. This leads to the error because the function module cannot execute properly without all required parameters.
  
  When does it occur?
  
  During workflow processing when the system tries to determine the receiver type dynamically.
  When a custom or standard function module is assigned for receiver determination but is incorrectly implemented or called.
  When the function module interface has changed or parameters are not correctly passed from the workflow container or calling program.
  
  
  Solution / How to fix:
  
  
  Check the Function Module:
  
  Identify the function module used for receiver type determination.
  Go to SE37 and check the interface of the function module.
  Verify which parameters are mandatory (not optional).
  
  
  
  Check the Workflow or Configuration:
  
  In the workflow or message determination configuration, check how the function module is called.
  Ensure that all mandatory parameters are passed correctly.
  If the function module is custom, verify that the implementation correctly handles all required parameters.
  
  
  
  Adjust the Function Module or Calling Code:
  
  If the function module is custom, modify it to handle optional parameters or provide default values if appropriate.
  Alternatively, ensure that the calling program or workflow container provides all required parameters.
  
  
  
  Check for SAP Notes or Updates:
  
  Sometimes, this error can be due to a known bug or patch issue.
  Search SAP Support Portal for notes related to the function module or workflow component you are using.
  
  
  
  Debugging:
  
  Use the debugger to trace the call to the function module.
  Check the values of parameters passed.
  Identify which parameter is missing or empty.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SWDD - Workflow Builder (to check workflow and receiver determination)
  SE37 - Function Module Builder (to check function module interface)
  SWI1 - Workflow log (to analyze workflow errors)
  
  
  
  Common Function Modules for Receiver Determination:
  
  SWW_WI_RECEIVER_TYPE_DETERMINE
  Custom function modules created for specific receiver determination logic.
  
  
  
  SAP Notes:
  
  Check SAP Notes related to workflow errors or receiver determination issues.
  Example search terms: "Receiver type determination function module parameter not optional"
  
  
  
  
  Summary:
  The error WA674 indicates that a mandatory parameter in the receiver type determination function module is missing. To resolve it, verify the function module interface, ensure all required parameters are passed from the workflow or calling program, and adjust the implementation if necessary.
  
  If you provide the exact function module name or context, I can help you with more specific guidance.