How To Fix SWF_EXP_001198 - Export parameter '&2' must not be filled (method &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 198

• Message text: Export parameter '&2' must not be filled (method &1)

What causes this issue?

The method &V1& is to be called within an expression. This method does
not have a unique results parameter, however it has one or more
parameters with an export property (<AB>Exporting</> or <AB>Changing
</>). A results parameter for a method that is not unique must always be
explicitly named to avoid ambiguities and to enable upwardly-compatible
enhancements to the method.

System Response

The expression contains syntax errors and must be corrected.

How to fix this error?

The expression is not unique and must be enhanced. Choose the required
results parameter (for example, <AB>
my_export_parameter</>) and enter it in the first position in the
parameter list.
<AB>( _RESULT = 'my_export_parameter' ; ... )</>

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_EXP_001198 - Export parameter '&2' must not be filled (method &1) ?

  The SAP error message SWF_EXP_001198 indicates that there is an issue with the export parameters of a method in a workflow. Specifically, it states that the export parameter '&2' must not be filled for the method '&1'. This typically occurs in the context of workflow definitions where certain parameters are expected to be empty or not populated.
  Cause:
  
  Incorrect Parameter Configuration: The method being called in the workflow has been defined in such a way that it expects certain export parameters to be empty. If these parameters are filled with data, it triggers this error.
  Workflow Logic Error: There may be a logical error in the workflow where the parameters are being incorrectly populated before the method is called.
  Changes in Method Definition: If the method's definition has changed (e.g., parameters were added or modified), and the workflow has not been updated accordingly, this error can occur.
  
  Solution:
  
  Check Method Definition: Review the method definition in the relevant function module or class. Ensure that the export parameters that are causing the error are indeed supposed to be empty.
  Review Workflow Logic: Go through the workflow logic to identify where the export parameters are being populated. Ensure that they are not being filled when they should be left empty.
  Update Workflow: If the method definition has changed, update the workflow to align with the new method signature. Remove any unnecessary assignments to the export parameters that should remain empty.
  Testing: After making the necessary changes, test the workflow to ensure that the error no longer occurs and that the workflow behaves as expected.
  
  Related Information:
  
  Workflow Development: Familiarity with SAP Workflow development and the specific methods being used is crucial for troubleshooting this error.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on handling export parameters in workflows.
  Debugging: Use the debugging tools in SAP to step through the workflow and observe the values being assigned to the export parameters. This can help pinpoint where the issue arises.
  
  By following these steps, you should be able to resolve the SWF_EXP_001198 error and ensure that your workflow functions correctly.