How To Fix MN438 - Error executing enhancement & (function exit &)

MN438 - Overview

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 438

• Message text: Error executing enhancement & (function exit &)

What causes this issue?

Component &V2& (function exit, function module) of enhancement &V1& has
been processed. Function module &V2& in function group &V3& was called
for this purpose.
In this function module, an error message was issued in an inadmissible
manner.

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

A message was issued without the addition 'RAISING'.
A message was issued with the addition 'RAISING NAME_EXCEPTION', but the
exception 'NAME_EXCEPTION' is not defined in the interface of the
function module.
The command 'RAISE' was used (i.e. no message set).

System Response

Programming, as described above, leads to an ABEND and is inadmissible.
The ABEND has been intercepted and this message was issued. It is not
possible to continue the processing.

How to fix this error?

Check the programming of function module &V2&, function group &V3&.
Refer to the notes in the documentation on enhancement &V2& on the
subject of the treatment of errors.
As this is a customer-specific enhancement for the system, you should,
if necessary, contact the responsible individual in your company.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN438 - Error executing enhancement & (function exit &) ?

  The SAP error message MN438, which states "Error executing enhancement & (function exit &)," typically occurs when there is an issue with a function exit or enhancement implementation in the SAP system. This error can arise due to various reasons, including:
  Causes:
  
  Missing Implementation: The function exit or enhancement may not be implemented or activated in the system.
  Incorrect Configuration: There may be incorrect or incomplete configuration settings related to the enhancement.
  Authorization Issues: The user executing the transaction may not have the necessary authorizations to access the enhancement.
  Code Errors: There could be errors in the ABAP code of the enhancement or function exit that prevent it from executing properly.
  Transport Issues: If the enhancement was transported from another system, there may be issues related to the transport itself.
  
  Solutions:
  
  Check Implementation: Verify that the function exit or enhancement is correctly implemented and activated. You can do this by navigating to the relevant transaction (e.g., SMOD for