How To Fix CNV_INDX256 - Unknown structure variant

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_INDX - Messages for conversion of INDX-like tables

• Message number: 256

• Message text: Unknown structure variant

What causes this issue?

The system was unable to recognize the variant of the RELID structure
(table &V1&, RELID='&V2&', key='&V4&'). The INDX RELID &V1&(&V2&) is not
marked to ignore such unknown variants.

System Response

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

How to fix this error?

You can explicitly select data rows to ignore. Do it only if the data
was created by you and the inconsistencies are caused by custom data
modifications. If the data was created or modified by SAP standard
application contact SAP for support.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_INDX256 - Unknown structure variant ?

  The SAP error message CNV_INDX256 Unknown structure variant typically occurs in the context of data migration or conversion processes, particularly when using SAP's tools for data transfer or transformation. This error indicates that the system is unable to recognize a specific structure variant that is being referenced in the process.
  Causes:
  
  Missing Structure Variant: The structure variant that is being referenced in the migration or conversion process does not exist in the system.
  Incorrect Configuration: There may be a misconfiguration in the settings related to the data migration or conversion process.
  Transport Issues: If the structure variant was recently transported from another system, it may not have been transported correctly or completely.
  Version Mismatch: The structure variant may be defined in a different version of the software or in a different client.
  
  Solutions:
  
  Check Structure Variants: Verify that the structure variant exists in the system. You can do this by navigating to the relevant transaction or configuration area where structure variants are defined.
  Create or Adjust Structure Variant: If the structure variant is missing, you may need to create it or adjust the existing one to ensure it matches the expected configuration.
  Review Migration Settings: Check the settings and parameters used in the migration or conversion process to ensure they are correctly configured.
  Transport Check: If the structure variant was supposed to be transported from another system, check the transport logs to ensure it was successfully imported.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration or conversion tool you are using for any additional troubleshooting steps or known issues.
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes to check or create structure variants (e.g., SE11 for Data Dictionary).
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional context.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.