How To Fix CNV_10020100 - Elementary relationship &1: Spec. form &2 has wrong interface

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 100

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

What causes this issue?

Specific routine &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 routine &V2&. <ZH>Note that the
definition must correspond EXACTLY to the definition of the sample
routine &V3& </>, because the call is explicitly included in the
programming.
<ZH>Note:</> The system checks the interface definition by comparing
the interface definition for routine &V2& with the corresponding
definition for sample routine &V3&. This is also why the interface
parameters have to have exactly the same names. Even the formatting
must be identical.
The best solution is to copy routine &V3& the routine you want to use.
<ZH>Note:</> The only setting you can change is the structure
definition of table parameter PT_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_10020100 - Elementary relationship &1: Spec. form &2 has wrong interface ?

  The SAP error message CNV_10020100 typically relates to issues encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This specific error indicates that there is a problem with the interface of a specified form in the context of an elementary relationship.
  Cause:
  The error message can arise due to several reasons, including:
  
  Incorrect Configuration: The specified form (e.g., a data structure or mapping) may not be correctly configured or may not match the expected interface for the elementary relationship.
  Data Model Changes: If there have been changes in the data model or the underlying structures in the source or target systems, this can lead to mismatches.
  Version Mismatch: The version of the migration tool or the data model being used may not be compatible with the version of the SAP system.
  Missing or Incorrect Mapping: The mapping between source and target fields may be incomplete or incorrect, leading to interface issues.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Check Configuration: Review the configuration of the specified form and ensure that it aligns with the expected interface. Make sure that all required fields are correctly defined.
  Validate Data Model: Ensure that the data model used in the migration process is up to date and matches the current version of the SAP system.
  Review Mapping: Check the mapping of fields between the source and target systems. Ensure that all necessary mappings are defined and that they correspond correctly to the expected data types and structures.
  Consult Documentation: Refer to the SAP documentation for the migration tool you are using. There may be specific guidelines or requirements for the forms and interfaces involved.
  Test with Sample Data: If possible, run a test migration with a small set of sample data to identify if the issue persists and to isolate the problem.
  Seek Support: If the issue cannot be resolved, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into common issues and their resolutions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.