How To Fix CNV_20100453 - No N:1 merge of accounts; duplicate handling remains as it is anyway

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20100 - Messageclass for chart of account conversion

• Message number: 453

• Message text: No N:1 merge of accounts; duplicate handling remains as it is anyway

What causes this issue?

The check has shown that you <ZH>do not</> want to merge any accounts or
cost elements.

System Response

If this is correct, the indicator for duplicate handling at table level
could be deleted because no duplicate records (that would have to be
merged or totaled) should occur.

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

&ADDITIONAL_HINTS&
However the indicator is <ZH>not</> deleted in this version of the chart
of accounts conversion software. The reason is that accounts may be
mapped to interval limits that do not correspond to actual accounts. In
this case, a merge would occur after all, and if the indicator was not
set, the conversion would terminate.
The performance is lower if the indicator is not set, but this does not
matter for the given version of the chart of accounts conversion
software.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20100453 - No N:1 merge of accounts; duplicate handling remains as it is anyway ?

  The SAP error message CNV_20100453 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue with merging accounts, specifically that a "No N:1 merge of accounts" is possible due to duplicate handling settings.
  Cause:
  
  Duplicate Accounts: The error arises when the system detects multiple accounts that could potentially be merged, but the merge cannot be performed due to existing duplicate handling settings.
  Configuration Settings: The settings for handling duplicates may not allow for the merging of accounts, which can be due to specific configurations in the migration tool or the data model.
  Data Quality Issues: There may be inconsistencies or errors in the data being migrated, leading to the inability to merge accounts.
  
  Solution:
  
  Review Duplicate Handling Settings: Check the configuration settings for duplicate handling in the migration tool. Ensure that the settings allow for the merging of accounts where appropriate.
  Data Cleansing: Before migration, perform a thorough data cleansing process to identify and resolve duplicates in the source data. This may involve standardizing account names, numbers, and other attributes.
  Manual Intervention: If automatic merging is not possible, consider manually reviewing the accounts flagged for duplication and decide on a case-by-case basis how to handle them.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using to understand the requirements and limitations regarding account merging.
  Testing: Conduct tests with a smaller dataset to ensure that the changes made to the duplicate handling settings or data cleansing efforts resolve the issue before performing a full migration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates regarding this error message.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for detailed guidelines on handling duplicates and account merging.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues and can share their solutions.
  
  By addressing the underlying causes and following the suggested solutions, you should be able to resolve the CNV_20100453 error and successfully complete your data migration.