How To Fix WA673 - Receiver type determination FM &: Parameter & has invalid reference &

SAP Error Message - Details

• Message type: E = Error

• Message class: WA - Messages from Workflow Event Manager

• Message number: 673

• Message text: Receiver type determination FM &: Parameter & has invalid reference &

What causes this issue?

The specified parameter of the specified function module for
determining the receiver type has a DDIC reference which does not
correspond to the interface required by such a function module.

System Response

The action was terminated, an event was not triggered.

How to fix this error?

Check the parameter definition.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WA673 - Receiver type determination FM &: Parameter & has invalid reference & ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WA673 Receiver type determination FM & : Parameter & has invalid reference &
  
  Cause:
  This error occurs during the execution of a receiver determination function module (FM) in the workflow. The function module is used to determine the receiver(s) of a workflow task.
  
  The error indicates that one of the parameters in the function module has an invalid reference.
  This usually means that the parameter expected by the FM is either:
  
  Not properly passed,
  Has an incorrect or missing value,
  Or the FM is trying to access a parameter that does not exist or is not correctly defined in the interface.
  
  
  
  In other words, the FM is called with incorrect or incomplete parameters, or the FM itself is referencing a parameter that is not valid in the current context.
  
  When does it occur?
  
  During workflow processing, specifically in the receiver determination step.
  When the workflow tries to determine the receiver(s) of a task using a custom or standard FM.
  If the FM interface or the parameters passed to it are inconsistent or incorrect.
  
  
  Solution:
  
  
  Check the Function Module Interface:
  
  Go to transaction SE37 and display the FM mentioned in the error message.
  Verify the parameters defined in the FM interface.
  Check if the parameters are importing, exporting, or tables parameters and their data types.
  
  
  
  Check the Workflow Configuration:
  
  In the workflow builder (SWDD), check the receiver determination step.
  Verify the FM assigned for receiver determination.
  Check the parameters passed to the FM in the receiver determination step.
  Ensure that the parameters passed match the FM interface exactly in name, type, and structure.
  
  
  
  Check the Parameter Mapping:
  
  If the FM expects certain parameters, make sure the workflow container or the calling program provides these parameters correctly.
  If the FM references container elements, ensure these elements exist and are correctly populated.
  
  
  
  Debug the FM:
  
  Set a breakpoint in the FM and run the workflow to see which parameter is causing the invalid reference.
  Check the values and references of the parameters at runtime.
  
  
  
  Correct the FM or Workflow:
  
  If the FM is custom, fix the code to handle parameters correctly.
  If the FM is standard, check if you are using it correctly or if you need to use a different FM.
  Adjust the workflow container or the calling program to pass the correct parameters.
  
  
  
  
  Additional Information:
  
  This error is common when custom FMs are used for receiver determination and the interface is not properly maintained.
  Always ensure that the FM interface and the workflow container elements are synchronized.
  SAP standard FMs for receiver determination usually have well-defined interfaces; custom FMs require careful design.
  Check OSS notes or SAP support if the FM is standard and the error persists.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WA673 Receiver type determination FM & : Parameter & has invalid reference &
  
  
  Cause
  FM called with incorrect or missing parameters; invalid parameter reference in FM
  
  
  Solution
  Verify FM interface and parameters; check workflow receiver determination step; correct parameter mapping; debug FM
  
  
  Tools to use
  SE37 (Function Builder), SWDD (Workflow Builder), Debugger
  
  
  
  
  If you provide the exact FM name and parameter details, I can help you with more specific guidance.