How To Fix CNV_10020668 - &1 &2: Specific function module &3 has wrong interface

CNV_10020668 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 668

• Message text: &1 &2: Specific function module &3 has wrong interface

What causes this issue?

Specific function module &V3& has been stored for &V1& &V2&. However the
interface is not defined correctly.

How to fix this error?

Correct the interface definition of function module &V3&. <ZH>Note that
it must be EXACTLY the same as for sample function module &V4&</>,
because internally the call is explicitly included in the coding.
<ZH>Note:</> The program for checking the interface definition compares
the definition for function module &V3& with the one for sample
functionmodule &V4&. This is also why the interface parameters have to
have exactly the same names.
The best solution is to copy function module &V4& to the function module
you want to use.

Error message extract from SAP system. Copyright SAP SE.

CNV_10020668 - Details

• The SAP error message CNV_10020668 indicates that there is an issue with a specific function module in the system, where the interface of the function module does not match the expected parameters or structure. This error typically arises during data migration or conversion processes, especially when using SAP's Data Migration tools or during system upgrades.
  
  Cause:
  
  
  Mismatch in Function Module Interface: The function module specified in the error message has an interface that does not match what is expected by the calling program or process. This could be due to:
  
  Changes in the function module's signature (parameters added, removed, or changed).
  The function module being incorrectly implemented or not activated.
  Version differences between the source and target systems.
  
  
  
  Custom Development: If the function module is a custom development, it may not have been updated correctly after changes to the underlying data structures or business logic.
  
  
  Transport Issues: If the function module was transported from another system, it