How To Fix CNV_PE_CHECK_V2128 - Object ID does not uniquely describe migration object instance

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_CHECK_V2 - Check Messages (Version 2020)

• Message number: 128

• Message text: Object ID does not uniquely describe migration object instance

What causes this issue?

Object ID must uniquely describe a migration object instance. As a rule,
it consists of all key fields of a header table, since their combination
guarantees required uniqueness.
Some key fields of your header table are <ZH>not </>marked as Object ID
fields. It can result in duplicate entries during data selection.

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?

Check whether the object ID definition is correct.

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_PE_CHECK_V2128 - Object ID does not uniquely describe migration object instance ?

  The SAP error message CNV_PE_CHECK_V2128 indicates that the Object ID provided does not uniquely identify a migration object instance during a data migration process. This error typically occurs in the context of SAP S/4HANA migrations or data transfer processes where specific objects need to be uniquely identified for successful migration.
  Cause:
  
  Duplicate Object IDs: The Object ID you are trying to use may not be unique in the context of the migration. This can happen if there are multiple entries in the source system that share the same Object ID.
  Incorrect Mapping: The mapping of the Object ID to the migration object may not be set up correctly, leading to ambiguity in identifying the correct instance.
  Data Integrity Issues: There may be issues with the data integrity in the source system, such as missing or corrupted records that prevent the system from identifying the object uniquely.
  
  Solution:
  
  Check for Duplicates: Review the source data to ensure that the Object ID is unique. You can run queries or reports to identify any duplicate entries.
  Correct Mapping: Ensure that the mapping of the Object ID to the migration object is correctly configured. This may involve reviewing the migration settings or configuration in the SAP system.
  Data Cleansing: If there are data integrity issues, consider cleansing the data in the source system to remove duplicates or correct any inconsistencies.
  Consult Migration Documentation: Refer to the SAP migration documentation for specific guidelines on how to handle Object IDs and migration objects. This may provide insights into best practices and troubleshooting steps.
  Use Transaction Codes: Utilize relevant transaction codes (like LTMC for Migration Cockpit) to check the migration objects and their configurations.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on resolving it.
  
  Related Information:
  
  Migration Cockpit: Familiarize yourself with the SAP Migration Cockpit, which is a tool designed to facilitate data migration to SAP S/4HANA.
  SAP Help Portal: The SAP Help Portal contains extensive documentation on data migration processes, including troubleshooting common errors.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurred.