How To Fix CNV20200018 - Table ONRAO: data is changed; possibly no duplicates

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20200 - Messages for development class CNV_20200

• Message number: 018

• Message text: Table ONRAO: data is changed; possibly no duplicates

What causes this issue?

The simulated conversion of the company code in the table ONRAO gave
the following results:
Data gets changed.
No duplicates caused by the company code conversion were detected.

System Response

Warning
CO object numbers are potentially relevant for the conversion and are
not excluded from the conversion.

How to fix this error?

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

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 CNV20200018 - Table ONRAO: data is changed; possibly no duplicates ?

  The SAP error message CNV20200018, which indicates that "Table ONRAO: data is changed; possibly no duplicates," typically arises during data migration or conversion processes, particularly when using SAP's data migration tools like the SAP S/4HANA Migration Cockpit or the SAP Data Services.
  
  Cause:
  
  Data Integrity Issues: The error suggests that there are changes in the data that may lead to inconsistencies or violations of unique constraints. This can happen if the data being migrated has duplicates or if the source data has been modified after the initial extraction.
  Duplicate Records: The system may have detected potential duplicates in the ONRAO table, which is causing the migration process to halt to prevent data integrity issues.
  Data Locking: If the data in the ONRAO table is being accessed or modified by another process during the migration, it can lead to this error.
  
  
  Solution:
  
  Check for Duplicates: Review the source data for duplicates. You can run queries to identify