How To Fix CNV20200015 - Table ONRAO: at least &1 data records become identical

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20200 - Messages for development class CNV_20200

• Message number: 015

• Message text: Table ONRAO: at least &1 data records become identical

What causes this issue?

The simulated conversion of the company code in the table ONRAO gave
the following results:
At least &V1& data records become identical.

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 CNV20200015 - Table ONRAO: at least &1 data records become identical ?

  The SAP error message CNV20200015 indicates that during a data migration or conversion process, the system has detected that at least one table (in this case, the ONRAO table) contains identical data records. This situation can arise during data migration projects, especially when consolidating or transforming data from multiple sources.
  Cause:
  
  Duplicate Data: The most common cause of this error is the presence of duplicate records in the source data that are being migrated to the target system.
  Data Transformation Logic: If the data transformation logic is not correctly defined, it may lead to the generation of identical records.
  Incorrect Mapping: If the mapping of fields from the source to the target is not done correctly, it can result in identical records being created.
  
  Solution:
  
  
  Identify Duplicates: 
  
  Analyze the source data to identify the duplicate records. You can use SQL queries or data profiling tools to find duplicates based on key fields.
  
  
  
  Data Cleansing:
  
  Clean the source data to remove duplicates before migration. This may involve consolidating records, merging data, or simply deleting unnecessary duplicates.
  
  
  
  Review Transformation Logic:
  
  Check the data transformation rules and ensure that they are correctly defined to avoid generating identical records during the migration process.
  
  
  
  Adjust Mapping:
  
  Review the mapping of fields from the source to the target to ensure that it is set up correctly and does not lead to duplication.
  
  
  
  Testing:
  
  After making the necessary adjustments, perform a test migration to ensure that the issue is resolved and that no identical records are created.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes or documentation related to the CNV20200015 error for additional guidance or updates.
  Data Migration Tools: If you are using specific SAP data migration tools (like SAP S/4HANA Migration Cockpit or SAP Data Services), refer to their documentation for best practices on handling duplicates.
  Consulting SAP Community: Engaging with the SAP Community or forums can provide insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to resolve the CNV20200015 error and ensure a successful data migration process.