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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020098 - Elementary relationship &1: Spec. function module &2 has wrong interface ?

  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 the wrong function module being called.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Function Module Interface:
  
  Go to transaction SE37 (Function Builder) and check the interface of the function module specified in the error message.
  Ensure that the parameters match what is expected by the migration process.
  
  
  
  Review Migration Settings:
  
  Check the settings in the migration cockpit or the data migration tool you are using. Ensure that the correct function module is being called for the specific elementary relationship.
  
  
  
  Update or Correct the Function Module:
  
  If the function module has been modified, consider reverting to the original version or updating it to match the expected interface.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific migration process you are using. There may be known issues or updates that address this error.
  
  
  
  Debugging:
  
  If you have access to the development environment, you can debug the migration process to see where the error occurs and gather more information about the parameters being passed.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with the error message and any relevant details about your migration process.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on function module interfaces.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific data migration tool you are using for best practices and troubleshooting tips.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the error CNV_10020098.