How To Fix CNV_10020098 - Elementary relationship &1: Spec. function module &2 has wrong interface

CNV_10020098 - Overview

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 098

• Message text: Elementary relationship &1: Spec. function module &2 has wrong interface

What causes this issue?

Specific function module &V2& has been assigned for mass determination
to elementary relationship &V1&. However the interface is not defined
correctly.

How to fix this error?

Correct the interface definition of function module &V2&. <ZH>Note that
the definition must correspond EXACTLY to the definition of the sample
function module &V3& </>, because the call is explicitly included in
the programming.
<ZH>Note:</> The system checks the interface definition by comparing
the interface definition for function module &V2& with the
corresponding definition for sample function module &V3&. This is also
why the interface parameters have to have exactly the same names.
The best solution is to copy function module &V3& the function module
you want to use.
<ZH>Note:</> The only setting you can change is the structure
definition of table parameter ET_LOR. This definition must comply with
the lengths of the determination objects.
For paths with interval definitions, the corresponding change to ROR
definition is required.

Error message extract from SAP system. Copyright SAP SE.

CNV_10020098 - Details

• The SAP error message CNV_10020098 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with the interface of a specific function module that is expected to handle an elementary relationship in the data migration process.
  
  Cause:
  The error can be caused by several factors, including:
  
  
  Incorrect Function Module Interface: The function module specified in the error message does not match the expected interface. This could be due to changes in the function module definition or incorrect implementation.
  
  
  Missing Parameters: The function module may be missing required parameters or have additional parameters that are not expected.
  
  
  Version Mismatch: If the function module has been modified or if there are version mismatches between the source and target systems, this can lead to interface discrepancies.
  
  
  
  Configuration Issues: There may be configuration issues in the migration settings that lead to