How To Fix MPE_AHF_CUST019 - Action handler &1 does not require parameters

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_AHF_CUST - Messages for AHF Customizing

• Message number: 019

• Message text: Action handler &1 does not require parameters

What causes this issue?

You are trying to add parameters for an action handler that does not
require parameters.

System Response

You cannot add parameters to the action handler.

How to fix this error?

To be able to assign parameters to the action handler, in the
Customizing (SPRO), under <LS>Production -> Manufacturing for Production
Engineering and Action Processing -> Production Operations -> Action
Processing</>, in activity <LS>Define Action Handlers</>, select the
<LS>Parameters Required</> check box for the action handler.

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 MPE_AHF_CUST019 - Action handler &1 does not require parameters ?

  The SAP error message MPE_AHF_CUST019 indicates that an action handler (denoted by &1) does not require any parameters, but parameters have been provided. This typically occurs in the context of the SAP Application Interface Framework (AIF) or similar scenarios where action handlers are used to process messages or events.
  Cause:
  The error is caused by a mismatch between the action handler's definition and the parameters being passed to it. Specifically, the action handler is defined in such a way that it does not expect any parameters, but the calling process is attempting to pass one or more parameters to it.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Action Handler Definition:
  
  Review the definition of the action handler in the SAP system. Ensure that it is correctly defined to either accept parameters or not, based on your business logic.
  
  
  
  Review Calling Process:
  
  Examine the process or code that is invoking the action handler. Ensure that it does not pass any parameters if the action handler is not designed to accept them.
  
  
  
  Modify Action Handler or Calling Code:
  
  If the action handler should accept parameters, modify its definition to include the necessary parameters.
  If the action handler is correctly defined to not accept parameters, then modify the calling code to remove any parameters being passed.
  
  
  
  Testing:
  
  After making the necessary changes, test the process again to ensure that the error is resolved and that the action handler behaves as expected.
  
  
  
  Related Information:
  
  Documentation: Refer to the SAP documentation for the Application Interface Framework (AIF) or the specific module you are working with to understand how action handlers are defined and used.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context or solutions.
  Debugging: If the issue persists, consider using debugging tools within SAP to trace the execution flow and identify where the parameters are being incorrectly passed.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.